Schedule

Lightelligence is using silicon photonic technology to accelerate industry standard deep learning workloads. This talk will focus on how algorithmic requirements drive the physical design of electro-optical and mixed-signal devices in a hybrid digital/analog system.

Authors:Gilbert Hendry/Lightelligence

We introduce an electro-optic hardware platform for realizing optical nonlinearities and demonstrate that, as a nonlinear activation function, it can substantially improve the classification performance of optical neural networks.

Authors:Ian Williamson/Stanford University Tyler Hughes/Stanford University Momchil Minkov/Stanford University Sunil Pai/Stanford University Ben Bartlett/Stanford University Shanhui Fan/Stanford University

We report all-optical object classification systems that are based on class-specific design of diffractive neural networks followed by a differential detection scheme. The blind inference accuracies achieved through this framework are significantly enhanced.

Authors:jingxi li/University of California, Los Angeles Deniz Mengu/University of California, Los Angeles Yi Luo/University of California, Los Angeles Yair Rivenson/University of California, Los Angeles Aydogan Ozcan/University of California, Los Angeles

We propose a digital incoherent optical neural network architecture using the passive data routing and copying capabilities of optics for artificial neural network acceleration. We demonstrate a proof-of-concept experiment and analyze optimal use cases.

Authors:Liane Bernstein/Massachusetts Institute of Technology Alexander Sludds/Massachusetts Institute of Technology Ryan Hamerly/Massachusetts Institute of Technology Vivienne Sze/Massachusetts Institute of Technology Joel Emer/Massachusetts Institute of Technology Dirk Englund/Massachusetts Institute of Technology

We propose and numerically demonstrate a fault-tolerant, efficient parallel nullification protocol to program and error-correct photonic neural networks for energy-efficient machine learning tasks.

Authors:Sunil Pai/Stanford University Ian Williamson/Stanford University Momchil Minkov/Stanford University Tyler Hughes/Stanford University Olav Solgaard/Stanford University Shanhui Fan/Stanford University David Miller/Stanford University

We designed, simulated, prototyped, and experimentally demonstrated an optoelectronic neuron with excitatory and inhibitory inputs. LTSpice simulation and experimental results closely resemble the Izhikevich model, and inhibitory input negates excitatory input to suppress output spikes.

Authors:Yun-Jhu Lee/University of California, Davis Mehmet Berkay On/University of California, Davis Xian Xiao/University of California, Davis S. J. Ben Yoo/University of California, Davis

Single quantum emitters offer useful functionalities for quantum optics and sensing, but the characterization of their properties is time consuming due to low photodetection rates. We have demonstrated that machine learning assisted data analysis can dramatically reduce data collection time(<1s) and increase accuracy for measurements of second-order fluorescence autocorrelation(>90%).

Authors:Vladimir Shalaev/Purdue University

In this presentation, I will highlight recent efforts in our group to realize electrically-tunable metasurfaces employing nanomechanics, microfluidics, phase change materials, and atomically-thin semiconductors. Such elements can find application in systems for optical beam steering and wavefront manipulation as well as dynamic holography

Authors:Mark Brongersma/Stanford University

We report the design and experimental demonstration of a ‘universal’ reconfigurable metasurface, which by electrical control of individual metasurface elements, enables both dynamic beam steering and reconfigurable focusing.

Authors:Ghazaleh Shirmanesh/California Institute of Technology Ruzan Sokhoyan/California Institute of Technology Pin Chieh Wu/California Institute of Technology Harry Atwater/California Institute of Technology

We demonstrate an extremely nonlinear all-dielectric metasurface that employs intersubband polaritons to achieve a second-harmonic conversion coefficient of 3 mW/W², and second-harmonic power conversion efficiency of 0.045% at a modest pump intensity of 6.7 kW/cm².

Authors:Raktim Sarma/Sandia National Labs Jiaming Xu/University of Texas at Austin Domenico de Ceglia/University of Padova Nishant Nookala/University of Texas at Austin Luca Carletti/University of Padova Salvadore Campione/Sandia National Labs John Klem/Sandia National Labs Sylvain Gennaro/Sandia National Labs Michael Sinclair/Sandia National Labs Mikhail Belkin/University of Texas at Austin Igal Brener/Sandia National Labs

Surface lattice resonances exhibit the highest quality-factors in metasurfaces containing plasmonic nanoparticles. We present our recent results in developing multiresonant high-$Q$ metasurfaces for various nonlinear applications, including efficient harmonic generation and optical-switching.

Authors:Orad Reshef/University of Ottawa Md Saad-Bin-Alam/University of Ottawa N. Apurv Chaitanya/Tecnologico de Monterrey Timo Stolt/Tampere University Ryan Hogan/University of Ottawa Mohammad Karimi/University of Ottawa M. Zahirul Alam/University of Ottawa Graham Carlow/Iridian Spectral Technologies Inc Brian Sullivan/Iridian Spectral Technologies Inc Israel De Leon/Tecnologico de Monterrey Jean-Michel Ménard/University of Ottawa Mikko Huttunen/Tampere University Ksenia Dolgaleva/University of Ottawa Robert Boyd/University of Ottawa

Mid-infrared self-referenced spectra with resolved comb lines of 100-MHz spacing span up to 8 THz. Schemes for direct mid-infrared and up-conversion detections lead to signal-to-noise ratio higher than 4000 at 1000-s averaging time.

Authors:Zaijun Chen/Max-Planck institute of quantum optics Theodor Hänsch/Max-Planck institute of quantum optics Nathalie Picqué/Max-Planck institute of quantum optics

We measured the high-resolution absorption spectrum of the carbon disulfide (CS₂) ν₁+ν₃ band using a broadband dual-comb subharmonic OPO system. The 14.5-MHz effective resolution was achieved by interleaving eight comb spectra with 115-MHz intermodal spacing.

Authors:Andrey Muraviev/CREOL, University of Central Florida Dmitrii Konnov/CREOL, University of Central Florida Konstantin Vodopyanov/CREOL, University of Central Florida

A fully convolutional deep neural network is used for rapid analysis of dual-comb interferograms. The increase in analysis speed enables massively parallelized spectroscopic detection and dual comb hyperspectral imaging in real-time.

Authors:Thibault Voumard/CSEM Thibault Wildi/CSEM Victor Brasch/CSEM Raul Gutierrez Alvarez/New Infrared Technologies Germán Vergara Ogando/New Infrared Technologies Tobias Herr/CSEM

We describe highly accurate molecular line positions determined by a recently developed comb-locked cavity ring-down spectrometer. Molecular transition frequencies near 1.6 μm are determined with relative total uncertainties below 1×10^-12 (200 Hz absolute uncertainty).

Authors:Zachary Reed/National Inst of Standards & Technology David Long/National Inst of Standards & Technology Helene Fleurbaey/National Inst of Standards & Technology Joseph Hodges/National Inst of Standards & Technology

We present a new robust approach to cavity-enhanced comb spectroscopy based on Vernier filtering, a fixed diffraction grating, custom-made chopper wheel, and a low bandwidth comb-cavity stabilization scheme. We measure a CO₂ spectrum with a few GHz resolution and 5 x 10^-8 cm^-1 sensitivity in 9.4 ms.

Authors:Francisco Senna Vieira/Umea University Chuang Lu/Umea University Isak Silander/Umea University Aleksander Gluszek/Wroclaw University of Science and Technology Grzegorz Sobon/Wroclaw University of Science and Technology Aleksandra Foltynowicz/Umea University

Real-time measurement of trace gases using NICE-OHMS shows great promise in delivering the required sensitivity to meet the needs of many sectors. We present progress on NICE-OHMS-based gas sensing devices for industrial and other applications.

Authors:E. Anne Curtis/National Physical Laboratory Nicola Black/National Physical Laboratory Geoffrey Barwood/National Physical Laboratory

David A. Long, Benjamin J. Reschovsky, Feng Zhou, Yiliang Bao, Ramgopal Madugani, Adam J. Fleisher, Jason J. Gorman, and Thomas W. LeBrun

Authors:David Long/NIST Benjamin Reschovsky/NIST Feng Zhou/NIST Yiliang Bao/NIST Ramgopal Madugani/NIST Adam Fleisher/NIST Jason Gorman/NIST Thomas LeBrun/NIST

Broadband high-resolution spectra of two key atmospheric species, methyl iodide (CH₃I) and dibromomethane (CH₂Br₂), are measured around 3 μm using a comb-based Fourier transform spectrometer and assigned with the help of the semi-automatic fitting in PGOPHER.

Authors:Ibrahim Sadiek/Umea University Adrian Hjältén/Umea University Michael Stuhr/University of Kiel Chuang Lu/Umea University Francisco Senna Vieira/Umea University Aleksandra Foltynowicz/Umea University

This talk introduces analog signal processing approaches such as pulse shaping and temporal imaging, which enable time-frequency manipulation of broadband light for applications ranging from ultrafast optics to quantum photonics.
Andrew Weiner is known for pioneering work on programmable femtosecond pulse shaping and ultrafast signal processing. He is author of the textbook Ultrafast Optics and previously served as Editor-in-Chief of Optics Express. Weiner is a member of the National Academy of Engineering and has received numerous awards, including the OSA Wood Prize and the IEEE Photonics Society Quantum Electronics Award.

Authors:Andrew Weiner/Purdue University

Continuous spectral phase shaping is demonstrated over a spectral bandwidth spanning from 540 nm to 2500 nm (450 THz) with a modulation dynamic large enough to shapesingle-cyclepulsesoreventransientelectricfieldsinthenearinfrared.

Authors:Vittorio diPietro/INPHYNI - CNRS-UCA - UNS Simone Bux/FASTLITE Nicolas Forget/FASTLITE Aurelie Jullien/INPHYNI - CNRS-UCA - UNS

We experimentally demonstrate how the optical Doppler effect can be exploited to modulate the carrier-envelope frequency of a mode-locked laser without causing detrimental side-effects and without any intervention into the laser.

Authors:Pascal Rustige/Max Born Institute Tianli Feng/Shandong University Gunter Steinmeyer/Max Born Institute

A mm-Wave frequency comb with 240GHz spacing is synchronized to a MLL-PIC using harmonic injection locking, this represent optical frequency division of 24x. The Allan Deviation on the repetition rate stability is 10^-10 at 1s.

Authors:Ricardo Bustos Ramirez/UCF Lawrence Trask/UCF Ashish Bhardwaj/Infinera Gloria Hoefler/Infinera Fred Kish/Infinera Peter Delfyett/UCF

We propose a free space time-stretching system for producing nanosecond pulse train with easily tunable time interval and spectrum period. In our demonstration experiments, we obtained 6 pulses with the time interval of 1 ns.

Authors:Takao Saiki/University of Tokyo Ayumu Ishijima/JST PRESTO Ichiro Sakuma/University of Tokyo Keiichi Nakagawa/University of Tokyo

A novel NxN optical phased array (OPA) with 2N phase shifters is proposed that significantly reduces power consumption and enables OPAs with compact element spacing. 2-D beam steering with an 8x8 OPA using the proposed scheme is demonstrated.

Authors:Farshid Ashtiani/University of Pennsylvania Firooz Aflatouni/University of Pennsylvania

A Lidar system based on lens assisted two-dimensional beam steering at 1550nm is demonstrated. The Lidar has 19m measurement distance and 4×4 scanning points, indicating the potential of integrated beam steering technology for Lidar applications.

Authors:Xianyi Cao/Shanghai Jiao Tong University Gaofeng Qiu/Shanghai Jiao Tong University Kan Wu/Shanghai Jiao Tong University Minglu Cai/Shanghai Jiao Tong University Chao Li/Shanghai Jiao Tong University Jianping Chen/Shanghai Jiao Tong University

We present a two-dimensional random-access optical beam steering system composed of a 20×20 focal plane switch array integrated on a silicon photonics chip with microelectromechanical-system (MEMS) optical switches. 32°×32° field-of-view is demonstrated.

Authors:Xiaosheng Zhang/University of California, Berkeley Kyungmok Kwon/University of California, Berkeley Johannes Henriksson/University of California, Berkeley Jianheng Luo/University of California, Berkeley Ming Wu/University of California, Berkeley

A new method for solid-state beamsteering using MEMS grating switches integrated on a Si-PIC has been demonstrated. This method provides fast random access switching, simple digital control, extremely low side-lobes, and is scalable to large arrays, large apertures, and long ranges.

Authors:Steven Spector/Charles Stark Draper Laboratory Eugene Cook/Charles Stark Draper Laboratory Michael Moebius/Charles Stark Draper Laboratory Fredrick Baruffi/Charles Stark Draper Laboratory Mirela Bancu/Charles Stark Draper Laboratory Lucas Benney/Charles Stark Draper Laboratory Steven Byrnes/Charles Stark Draper Laboratory Jordan Chesin/Charles Stark Draper Laboratory Sarah geiger/Charles Stark Draper Laboratory Daniel Goldman/Charles Stark Draper Laboratory Alva Hare/Charles Stark Draper Laboratory Benjamin Lane/Charles Stark Draper Laboratory William Sawyer/Charles Stark Draper Laboratory Chris Bessette/Charles Stark Draper Laboratory

We demonstrated linear frequency-chirp modulation using a wide-bandwidth analog electro-optical phase-locked loop, leveraging linear analog multipliers in a single sideband frequency down-conversion scheme, without electrical ramp generation, predistortion circuitry, or complex digital logic.

Authors:Keisuke Kondo/University of Southern California Hossein Hashemi/University of Southern California

We demonstrate simultaneous ranging and velocimetry measurements by using multi-tone continuous wave Lidar. We show >95% agreement with conventional time-of-flight Lidar technique in ranging and ±0.8cm/s accuracy in velocity measurements.

Authors:Mustafa Bayer/University of California, Irvine Rasul Torun/University of California, Irvine Imam Zaman/University of California, Irvine Ozdal Boyraz/University of California, Irvine

We demonstrate that single-pixel imaging resolution of optical phased array can be enhanced by transmitting through a multimode fiber. Using only 128 phase shifters, >1000 points are resolved, determined by the number of fiber modes.

Authors:Taichiro Fukui/The University of Tokyo Yoshiaki Nakano/The University of Tokyo Takuo Tanemura/The University of Tokyo

We derive image space fields of ideal flat metalenses, which differ significantly from those of refractive lenses, and use them to determine the modulation transfer function, depth of focus and spectral bandwidth of flat metalenses.

Authors:Andrew McClung/University of Massachusetts Amherst Mahdad Mansouree/University of Massachusetts Amherst Sarath Samudrala/University of Massachusetts Amherst Amir Arbabi/University of Massachusetts Amherst

We introduce spectra2pix, a deep neural network trained to generate 2D images of nanostructures based on their transmission spectra. Owing to this architecture, our model can be trained for the design of any arbitrary geometry.

Authors:Michael Mrejen/Tel Aviv University Itzik Malkiel/Tel Aviv University Lior Wolf/Tel Aviv University Haim Suchowski/Tel Aviv University

We demonstrate optical analog imaging processing using a flat optic for direct image differentiation allowing one to significantly shrink the required optical system size compared to traditional approaches.

Authors:Jason Valentine/Vanderbilt University

By utilizing a single multi-level diffractive lens coupled along with a conventional monochrome image sensor, we demonstrate a ~1mm thick near-infrared camera with a Field Of View up to 50^o and on-axis focusing efficiency > 90%.

Authors:Sourangsu Banerji/University of Utah Monjurul Meem/University of Utah Apratim Majumder/University of Utah Fernando Vasquez/University of Utah Berardi Rodriguez/University of Utah Rajesh Menon/University of Utah

We design, fabricate and characterize a cylindrical metasurface lens operating at ~ 625nm with a depth of focus exceeding that of an ordinary lens using adjoint optimization-based inverse electromagnetic design.

Authors:Elyas Bayati/University of Washington Raphael Pestourie/MIT Shane Colburn/University of Washington Zin Lin/MIT Steven Johnson/MIT Arka Majumdar/University of Washington

We introduce a new far-field and label-free imaging paradigm based on combining singularity illumination with artificial-intelligence enabling reconstruction of an object from the scattered light. We demonstrate imaging resolution beyond λ/100.

Authors:Tanchao Pu/University of Southampton Vassili Savinov/University of Southampton Guanghui Yuan/Nanyang Technological University Jun-Yu Ou/University of Southampton Nikitas Papasimakis/University of Southampton Nikolay Zheludev/University of Southampton

Hybrid refractive-metasurface devices, with nondispersive refraction in the visible, have been demonstrated. Relying on Pancharatnam Berry phase gradient metasurfaces, we propose a centimeter scale metasurface for chromatic and spherical aberration correction of a lens.

Authors:Rajath Sawant/CRHEA-CNRS Daniel Andren/Chalmers university Mikael Kall/Chalmers university Ruggero Verre/Chalmers university Patrice Genevet/CRHEA-CNRS

We demonstrate that decay rates of NV centers in diamond nanoparticles strongly depend on the dielectric environment. Embedding into and placing on dielectric, semiconductor and plasmonic films of subwavelength thickness is investigated by time-resolved cathodoluminescence.

Authors:Hao Li/University of Southampton Jun-Yu Ou/University of Southampton Vassili A. Fedotov/University of Southampton Nikitas Papasimakis/University of Southampton Nikolay Zheludev/University of Southampton

We demonstrate the effective generation of singlet oxygen (¹O₂) catalyzed by hot electrons obtained from the plasmon decay in TiN@TiO₂ core-shell nanoparticles at 700 nm excitation.

Authors:Xiaohui Xu/Purdue University Aveek Dutta/Purdue University Jacob Khurgin/Johns Hopkins University Vladimir Shalaev/Purdue University Alexander Wei/Purdue University Alexandra Boltasseva/Purdue University

In this talk I will discuss our recent work on understanding the radiative, non-radiative, chiral, and mechanical properties of individual and coupled plasmonic nanostructures.

Authors:Stephan Link/Rice University

We found that inhibition of concentration quenching of HITC dye in Fabry-Perot cavities is almost similar to that on top of silver. Low convexity of the emission kinetics suggests strong coupling mediated by surface plasmons.

Authors:Samantha Koutsares/Norfolk State University Lyudvig Petrosyan/Jackson State University Devon Courtwright/Norfolk State University Srujana Prayakarao/Norfolk State University Carl Bonner/Norfolk State University Mikhail Noginov/Norfolk State University Tigran Shahbazyan/Jackson State University

We study strong coupling (SC) in a system of plasmonic nanohole arrays and transition-metal dichalcogenide material (WS₂). Using FDTD simulations and a genetic algorithm, we design several array geometries to obtain large Rabi splitting at room-temperature.

Authors:Yael Blechman/Technion – Israel Institute of Technology Shai Tsesses/Technion – Israel Institute of Technology Gilad Feinberg/Technion – Israel Institute of Technology Alex Hayat/Technion – Israel Institute of Technology Guy Bartal/Technion – Israel Institute of Technology

Here we demonstrate our recent progresses on strong coupling between quantum emitters and plasmonic gap resonators, which exhibit many interesting phenomena that can not be observed in traditional cavities, such as spatial mode modification and exction number tuneability.

Authors:Boyang Ding/University of Otago

To study FRET-mediated photo-physics in self-assembled CdSe nanoplatelets, we imaged their energy migration by micro-photoluminescence and found an energy transfer over 500-nm, from which a homo-FRET rate of (1.8ps)^-1 is estimated by a diffusion model.

Authors:jiawen liu/Sorbonne Université,CNRS,Institut de NanoSciences de Paris Lilian Guillemeney/Univ Lyon, CNRS, École Normale Supérieure de Lyon, Laboratoire de Chimie Arnaud Choux/Sorbonne Université,CNRS,Institut de NanoSciences de Paris Agnès Maître/Sorbonne Université,CNRS,Institut de NanoSciences de Paris Benjamin Abécassis/Univ Lyon, CNRS, École Normale Supérieure de Lyon, Laboratoire de Chimie Laurent Coolen/Sorbonne Université,CNRS,Institut de NanoSciences de Paris

We demonstrate dynamical encirclement of an exceptional point in a laser cavity. By continuously varying the detuning and coupling between a pair of PT-symmetric waveguides, the mode morphs into a different eigenmode as it emerges from opposing facets.

Authors:Lei Ding/University of Southern California Alexander Schumer/Vienna University of Technology (TU Wien) Jason Leshin/University of Central Florida, CREOL Yousef Alahmadi/University of Central Florida, CREOL Absar Ul Hassan/University of Central Florida, CREOL Gisela LÓPEZ-GALMICHE/University of Central Florida, CREOL Patrick LiKamWa/University of Central Florida, CREOL Stefan Rotter/Vienna University of Technology (TU Wien) Demetrios Christodoulides/University of Central Florida, CREOL Mercedeh Khajavikhan/University of Southern California

We study the dynamics of a non-Hermitian system with gain saturation non- linearity. We find the chiral state transfer behavior is recovered, and new phenomenon such as bistability and high gain threshold lasing emerges.

Authors:Haiwen Wang/Stanford University Sid Assawaworrarit/Stanford University Shanhui Fan/Stanford University

We experimentally demonstrate for the first time omnipolarizer action in the optical domain. This is achieved by encircling a non-Hermitian singularity through which the output polarization state can be faithfully and unidirectionally preselected.

Authors:Gisela LÓPEZ-GALMICHE/University of Central Florida Helena Lopez Aviles/University of Central Florida Absar Ul Hassan/University of Central Florida Alexander Schumer/Vienna University of Technology Tsampikos Kottos/Wesleyan University Patrick LiKamWa/University of Central Florida Mercedeh Khajavikhan/University of Southern California Demetrios Christodoulides/University of Central Florida

We observe experimentally collective lasing of a topological mode in a vertical-cavity surface-emitting laser (VCSEL) array. The array is comprised of pillar-shaped VCSELs in a crystalline model geometry and is optically pumped.

Authors:Alex Dikopoltsev/Technion Tristan Harder/University of Wurzburg Eran Lustig/Technion Sven Höfling/University of Wurzburg Mordechai Segev/Technion Sebastian Klembt/University of Wurzburg

We show that a nonlinear topological Haldane lattice can exhibit a number of intriguing thermodynamic properties such as a metastable response leading to different temperatures in two bands or thermal equilibrium at different chemical potentials.

Authors:Pawel Jung/CREOL Fan Wu/CREOL Midya Parto/CREOL Yuzhou Liu/CREOL Mercedeh Khajavikhan/CREOL Demetrios Christodoulides/CREOL

We experimentally demonstrate topologically protected transport in the presence of disorder for a Thouless pump in a photonic waveguide lattice. This concept may lead to robust high density optical interconnects and slow light devices.

Authors:Alexander Cerjan/Pennsylvania State University Sheng Huang/University of Pittsburgh Mohan Wang/University of Pittsburgh Kevin Chen/University of Pittsburgh Mikael Rechtsman/Pennsylvania State University

We report on the first demonstration of electrically pumped topological insulator laser arrays. When pumping is applied to the elements in the perimeter, a sharp single-mode lasing peak can be detected across the array.

Authors:Jae-Hyuck Choi/University of Southern California William Hayenga/University of Southern California Midya Parto/University of Central Florida Yuzhou Liu/University of Southern California Babak Bahari/University of Southern California Demetrios Christodoulides/University of Central Florida Mercedeh Khajavikhan/University of Southern California

We fabricate nanophotonic topological cavities incorporating III-V semiconductor quantum wells and observe room-temperature lasing with narrow spectrum, high coherence, and threshold behavior. The emitted beam hosts a singularity encoded by the specific triade cavity mode

Authors:Aditya Tripathi/Australian National University Daria Smirnova/Australian National University Sergey Kruk/Australian National University Min-Soo Hwang/Korea University Ha-Reem Kim/Korea University Hong-Gyu Park/Korea University Yuri Kivshar/Australian National University

We propose and experimentally verify a flexible and robust rotational Doppler velocimetry for detecting a remotely rotating target in situ, which uses a ring-core fiber that can stably transmit the orbital angular momentum superposed modes.

Authors:Zhenyu Wan/Huazhong University of Science and Technology Yize Liang/Huazhong University of Science and Technology Liang Fang/Huazhong University of Science and Technology Jian Wang/Huazhong University of Science and Technology

Machine learning (ML) techniques combined with a high-resolution (~17 nanoradian) fiber-optic inclinometer (FOI) are used to recognize and classify vibrations stimulated at different locations on the perimeter of the FOI.

Authors:Chen Zhu/Missouri University of Science and Technology Jie Huang/Missouri University of Science and Technology

A laser-diode self-mixing interferometer with minimum part-count analogue processing of fringe signal is developed. It detects ambient vibrations with high sensitivity and is an excellent burglary intrusion detector, on a range up to several meters.

Authors:Silvano Donati/Universita degli Studi di Pavia

We report passive fiber-optic dynamic strain sensing with ultrahigh resolutions of 60 fε/√Hz at 1 kHz, 50 fε/√Hz at 2 kHz and 30 fε/√Hz at 23 kHz using a meter-long, high finesse fiber Fabry-Perot resonator.

Authors:Nabil Md Rakinul Hoque/University of Alabama in Huntsville Lingze Duan/University of Alabama in Huntsville

An ultra-sensitive optical microfiber ultrasonic sensor is proposed and demonstrated. The noise equivalent pressure length product of this sensor is 1.71kPa mm, which gives a 53 times improvement compared with standard single-mode fiber.

Authors:Liuyang Yang/Huazhong Univ of Science and Technology Yanpeng Li/Huazhong Univ of Science and Technology Fang Fang/Huazhong Univ of Science and Technology Liangye Li/Huazhong Univ of Science and Technology Qizhen Sun/Huazhong Univ of Science and Technology

A novel Fabry-Perot sensor, comprised a glass sphere bonded to a capillary and single-mode fiber, is proposed for refractive index sensing. It is characterized in air, water, ethanol, isopropanol, and glycerol.

Authors:Muhammad Mahmood Ali/University of Limerick Sanober Memon/University of Limerick Fintan McGuinness/University of Limerick Elfed Lewis/University of Limerick Gabriel Leen/University of Limerick

By utilizing a new method of package, a silicon ring resonator was successfully applied to cryogenic sensing. And it was experimentally demonstrated to have a linear sensitivity of 64.8 pm/K from 180 K to 300 K.

Authors:Minmin You/Shanghaijiaotong University jingquan liu/Shanghaijiaotong University

We report an ultra-wideband channel sounding enabled by an optical dual-comb and photonic asynchronous sampling. A 2–18 GHz rich-multipath wireless channel is measured by a <60 MSa/s ADC with >1 kHz highest refresh rate.

Authors:Hancheng Tong/Beihang University Yihong Li/Beihang University Yihan Li/Beihang University Ting Li/Beihang University Xin Zhao/Beihang University Zheng Zheng/Beihang University

Simulations and experiments demonstrate that inclusion of subwavelength features inside photonic crystal unit cells enables new control over mode distribution, polarization, and peak energy density for advances in nonlinear optics, light emission, and optical communication.

Authors:Sharon Weiss/Vanderbilt University Sami Halimi/Vanderbilt University Zhongyuan Fu/Vanderbilt University Joshua Allen/Vanderbilt University Francis Afzal/Vanderbilt University Zibo Gong/Vanderbilt University Shuren Hu/Vanderbilt University

Radiative and intrinsic losses are significant challenges faced by near-zero-index materials. Zero-index photonic crystals with Bound States in the Continuum are able to overcome these challenges. Here we experimentally verify the combined effects in a novel dielectric photonic crystal design.

Authors:Larissa Vertchenko/Technical University of Denmark Radu Malureanu/Technical University of Denmark Clayton DeVault/Harvard University Eric Mazur/Harvard University Andrei Lavrinenko/Technical University of Denmark

Using the concept of bound states in the continuum, we design a photonic crystal cavity supporting two resonant modes separated by a full octave for efficient second-order nonlinear frequency conversion.

Authors:Momchil Minkov/Stanford University Shanhui Fan/Stanford University Jun Wang/EPFL Romuald Houdre/EPFL Marco Clementi/Universita di Pavia Andrea Barone/Universita di Pavia Dario Gerace/Universita di Pavia Matteo Galli/Universita di Pavia

We demonstrate the coupling of ultrahigh-Q whispering-gallery-mode with silicon photonic crystals. It allows efficient coupling of high-Q mode directly with high-index silicon slab and will also enable further advancement of dynamic tuning of the Q.

Authors:Koki Yube/Keio University Hajime Kumazaki/Keio University Yuyang Zhuang/Nanjing University Shun Fujii/Keio University Riku Imamura/Keio University Rammaru Ishida/Keio University Takasumi Tanabe/Keio University

An automated finite-element-method-based optimization code can optimize the position of more than 20 holes generated in an L3 nanocavity with a theoretical Q factor exceeding 2×10⁷ with only 111-sample-cavity generation.

Authors:Eiichi Kuramochi/NTT Corporation Shota Kita/NTT Corporation Akihiko Shinya/NTT Corporation Masaya Notomi/NTT Corporation

We report on lasing operation up to 339K in nanocavities constituted of subwavelength ZnO nanowires integrated in SiN photonic crystals. With thresholds as low as 4MW.cm^-2, the investigated nanolasers outperform previously reported subwavelength ZnO nanowire lasers operating at high-temperature.

Authors:Sylvain Sergent/NTT Nanophotonics Center Masato Takiguchi/NTT Nanophotonics Center Tai Tsuchizawa/NTT Nanophotonics Center Hideaki Taniyama/NTT Nanophotonics Center Masaya Notomi/NTT Nanophotonics Center

We demonstrate tungsten based spectrally selective structures stable up to 1400 °C for thermophotovoltaic applications. Tungsten-hafnia multilayer metamaterials and tungsten-zirconia photonic crystal structures are presented.

Authors:MANOHAR CHIRUMAMILLA/Technical University of Hamburg Gnanavel Vaidhyanathan Krishnamurthy/Helmholtz-Zentrum Geesthacht Centre for Materials and Coastal Research Katrin Knopp/Technical University of Hamburg Tobias Krekeler/Hamburg University of Technology Matthias Graf/Technical University of Hamburg Dirk Jalas/Technical University of Hamburg Martin Ritter/Hamburg University of Technology Michael Störmer/Helmholtz-Zentrum Geesthacht Centre for Materials and Coastal Research Alexander Petrov/Technical University of Hamburg Manfred Eich/Technical University of Hamburg

We experimentally demonstrate a type II hyperbolic metamaterials (HMMs) using the recently emerged perovskite gain material and Au. The hyperbolic dispersion of the fabricated device is investigated by measuring its polarization anisotropy.

Authors:Zhitong Li/University of Texas at Dallas Joseph Smalley/Digilens, Inc Ross Haroldson/University of Texas at Dallas Dayang Lin/University of Texas at Dallas Roberta Hawkins/University of Texas at Dallas Abouzar Gharajeh/University of Texas at Dallas Jiyoung Moon/University of Texas at Dallas Junpeng Hou/University of Texas at Dallas Chuanwei Zhang/University of Texas at Dallas Walter Hu/University of Texas at Dallas Anvar Zakhidov/University of Texas at Dallas Qing Gu/University of Texas at Dallas

We are reporting wavelength-thick ITO films in ENZ regime around optical telecommunications wavelength, which permit the design of new ENZ photonic devices. Non-uniform optical behavior has been studied and presented in this paper.

Authors:Jimmy Ni/U.S. Army Research Laboratory Wendy Sarney/U.S. Army Research Laboratory Asher Leff/U.S. Army Research Laboratory James Cahill/U.S. Army Research Laboratory Weimin Zhou/U.S. Army Research Laboratory

We numerically model and experimentally demonstrate sub-diffraction limited focusing of mid-infrared light using all-semiconductor hyperbolic metamaterial photonic funnels. Enhanced transmission through single funnels with aperture λ/20 is demonstrated, in excellent agreement with our simulations.

Authors:Kun Li/University of Texas at Austin Evan Simmons/University of Massachusetts Lowell Andrew Briggs/University of Texas at Austin Jiaming Xu/University of Texas at Austin Yue Cheng/University of Texas at Austin Ray T. Chen/University of Texas at Austin Seth Bank/University of Texas at Austin Viktor Podolskiy/University of Massachusetts Lowell Dan Wasserman/University of Texas at Austin

The electromagnetic response of ballistic metamaterials, metal-dielectric composites with the unit cell size smaller than electron mean free path, is defined by the surface scattering of the free electrons at the metal-dielectric interface

Authors:Evgenii Narimanov/Purdue University

We investigate the thickness-, distance- and loss-dependent interaction between nanoantenna arrays and an epsilon-near-zero (ENZ) thin film. We show the conditions for ultrastrong coupling and the length invariant pinning of antenna resonances on ENZ films.

Authors:Karapet Manukyan/University of Southern California M. Zahirul Alam/University of Ottawa Cong Liu/University of Southern California Kai Pang/University of Southern California Hao Song/University of Southern California Zhe Zhao/University of Southern California Moshe Tur/Tel Aviv University Robert Boyd/University of Rochester Alan Willner/University of Southern California

Far-field thermal emission is measured for multi-mode optical antennas fabricated on an epsilon-near-zero substrate. The evolution of the emission pattern for the Berreman and first and second antenna modes versus antenna length is presented.

Authors:Irfan Khan/University of Notre Dame Owen Dominguez/University of Notre Dame Junchi Lu/University of Notre Dame leland Nordin/The University of Texas at Austin Dan Wasserman/The University of Texas at Austin Anthony Hoffman/University of Notre Dame

We have realized a silicon Dirac-cone zero-index metamaterial which incorporates a bound state in the continuum at the near-infrared degenerate triple point. Here, radiative losses are strongly suppressed by the ~5000 Q-factor of the metasurface.

Authors:Haoning Tang/Harvard University Clayton DeVault/Harvard University

We report light emission around 1200 nm from a vertical heterostructure consisting of MoS₂ and WSe₂ monolayers. The emission, arising from the fundamental interlayer exciton, can be tuned by nearly 100 nm by electrical gating.

Authors:Ouri Karni/Stanford University Elyse Barre/Stanford University Sze Cheung Lau/Stanford University Eric Yue Ma/Stanford University Roland Gillen/Friedrich-Alxander Universitat Bumho Kim/Columbia University Watanabe Watanabe/National Institute of Material Science Takashi Taniguchi/National Institute of Material Science Janina Maultzsch/Friedrich-Alxander Universitat Katayun Barmak/Columbia University Ralph Page/Stanford University Tony Heinz/Stanford University Jaffe Tzach/Technion-Israel Institute of Technology Lior Gal/Technion-Israel Institute of Technology Meir Orenstein/Technion-Israel Institute of Technology

We experimentally demonstrate an indirect to direct bandgap transition on bilayer MoTe₂ by strain engineering. By applying 0.58% tensile strain, photoluminescence intensity is increased by 2.22 times, and linewidth is reduced by 36%.

Authors:Yueyang Yu/Arizona State University Cun-Zheng Ning/Arizona State University

We demonstrate significant enhancement (≥40%) in valley coherence of localized excitons in monolayer WS₂ via strain engineering. The observed enhancement is attributed to the suppression of inter valley scattering due to strain induced potential.

Authors:Prathmesh Deshmukh/City University of New York Biswanath Chakraborty/City University of New York Mandeep Khatoniar/City University of New York Vinod Menon/City University of New York

Exciton emission wavelengths on a bubble of 2D material are affected by local strain and dielectric environment. Such localized wavelength profile is reconstructed for a WS₂ bubble smaller than wavelengths using AFM measured topography.

Authors:Danyang Zhang/Tsinghua University

We report on second harmonic generation in MoS₂ monolayers on a substrate with near zero dielectric constant. The enhanced pump field at the 2D material results in an order of magnitude frequency conversion increase.

Authors:Pilar Gregory Vianna/Mackenzie Presbyterian University Aline Almeida/Mackenzie Presbyterian University Rodrigo Gerosa/Mackenzie Presbyterian University Dario Bahamon/Mackenzie Presbyterian University Christiano De Matos/Mackenzie Presbyterian University

We report on second harmonic generation from MoS₂/WS₂ as-grown heterostructures. The two crystal structures naturally align with 0^o and ~60^o twist angles. While the former enhances, the latter decreases the nonlinearity from individual layers.

Authors:Alexandre Ore/Universidade Presbiteriana Mackenzie Pilar Gregory Vianna/Universidade Presbiteriana Mackenzie Syed Gardezi/Pontifícia Universidade Católica do Rio de Janeiro Vanessa Gordo/Universidade Presbiteriana Mackenzie Isabel Carvalho/Pontifícia Universidade Católica do Rio de Janeiro Victor Oliveira/Pontifícia Universidade Católica do Rio de Janeiro Christiano De Matos/Universidade Presbiteriana Mackenzie

We investigate a back-gate-controlled monolayer WS₂ device using ultrafast pump-probe spectroscopy. While gate-induced electrostatic doping does not show impact on the transient dynamics, our experiments reveal dramatic difference for lifetimes of neutral and charged excitons.

Authors:Anran Wang/Nanjing University Yuhan Wang/Nanjing University Jianfei Li/Nanjing University Yi Shi/Nanjing University Fengqiu Wang/Nanjing University

Spin-polarized terahertz waves with arbitrarily tailored temporal shaping are successfully demonstrated in three-dimensional topological insulator Bi₂Te₃ when delicately controlling the incident femtosecond laser polarization and the sample azimuthal angle.

Authors:Xiaojun Wu/Beihang University Haihui Zhao/Beihang University Xinhou Chen/Beihang University Hangtian Wang/Beihang University Chun Wang/Institute of Physics, Chinese Academy of Sciences Tianxiao Nie/Beihang University

We report a THz emitter based on a metal-graphene-silicon heterostructure. Increased carrier collection efficiency by the graphene layer leads to an 80-time amplitude enhancement over its graphene-free counterpart, with no tradeoff in bandwidth or SNR.

Authors:Dehui Zhang/University of Michigan Zhen Xu/University of Michigan Gong Cheng/University of Michigan Zhe Liu/University of Michigan Audrey Rose Gutierrez/University of Michigan Theodore Norris/University of Michigan Zhaohui Zhong/University of Michigan

Amplitude of Terahertz radiation from air plasma is enhanced by one order of magnitude with a 3-color femtosecond sawtooth field. Moreover, the THz wave can be coherently controlled by the two relative phases.

Authors:Shaojie Liu/Univ. of Shanghai for Sci. and Tech. Chenhui Lu/Shanghai University of Engineering Science Zhengquan Fan/Univ. of Shanghai for Sci. and Tech. Jieyu Gui/Univ. of Shanghai for Sci. and Tech. Qingqing Liang/Univ. of Shanghai for Sci. and Tech. Bin Zhou/Univ. of Shanghai for Sci. and Tech. Aurelien Houard/ENSTA Paris Andre Mysyrowicz/ENSTA Paris Songlin Zhuang/Univ. of Shanghai for Sci. and Tech. Yiu Liu/Univ. of Shanghai for Sci. and Tech.

We report the generation of coherent radiation from terahertz to ultraviolet via two-color mid-infrared laser mixing in air. We achieve laser-to-terahertz conversion efficiency of ~1%, 10~100 times greater than those obtained with 800 nm lasers.

Authors:Dogeun Jang/University of Maryland at College Park Robert Schwartz/University of Maryland at College Park Daniel Woodbury/University of Maryland at College Park Jesse Griff-McMahon/University of Maryland at College Park Abdurrahman Younis/University of Maryland at College Park Howard Milchberg/University of Maryland at College Park Ki-Yong Kim/University of Maryland at College Park

Room-temperature Fe₃GeTe₂-Bi₂Te₃ heterostructures have been systematically investigated on terahertz emission spectroscopy. Detectable terahertz pulses can be, to some extent, as a verification for the successful fabrication of the room-temperature 2D magnetic material.

Authors:Xiaojun Wu/Beihang University Xinhou Chen/Beihang University Hangtian Wang/Beihang University Gaoshuai Wei/Institute of Physics, Chinese Academy of Sciences Tianxiao Nie/Beihang University

2D terahertz spectroscopy can disentangle coupling between different degrees of freedom. We discuss the complex 2D terahertz spectra of β-barium borate and model different vibrational couplings to assign spectral features that arise from such coupling.

Authors:Brittany Knighton/Brigham Young University Megan Nielslon/Brigham Young University R. Tanner Hardy/Brigham Young University Aldair Alejandro/Brigham Young University Lauren Rawlings/Brigham Young University Jeremy Johnson/Brigham Young University

The ground state of electromagnetic radiation is characterised by a fluctuating electromagnetic field even in a vacuum. We measure its correlation function as a function of time and space using the electro-optic effect. We determine the spectral content and the amplitude of this state and find excellent agreement with the second quatisation theory. Finally, we discuss the potential of recent electro-optic quantum coherent interfaces for cavity electrodynamics experiments in the terahertz.

Authors:Ileana-Cristina Benea-Chelmus/Harvard John A. Paulson School of Engineering and Applied Sciences Francesca Fabiana Settembrini/ETH Zurich Yannick Salamin/ETH Zurich Yuriy Fedoryshyn/ETH Zurich Wolfgang Heni/ETH Zurich Delwin Elder/University of Washington Larry Dalton/University of Washington Juerg Leuthold/ETH Zurich Giacomo Scalari/ETH Zurich Jérôme Faist/ETH Zurich

Sub-40 fs pulses at 1.8 µm are generated by pumping H₂-filled hollow-core PCF with 300 fs, 1.03 µm fiber laser pulses pre-chirped to a duration of 640 fs. Conversion efficiencies of 50% are obtained.

Authors:Sébastien Loranger/Max Planck Institute for the Science of Light David Novoa/Max Planck Institute for the Science of Light Philip Russell/Max Planck Institute for the Science of Light

We report 9.2-dB Raman amplification of pulses at 1121 nm in an orbital angular momentum mode with charge 15 in 30 m of 50-µm-diameter step-index-core fiber. The amplified signal mode-purity is measured to 78.4%.

Authors:Sheng Zhu/University of Southampton Srinivas Pachava/Indian Institute of Technology Madras Shankar Pidishety/University of Southampton Yutong Feng/University of Southampton Balaji Srinivasan/Indian Institute of Technology Madras Johan Nilsson/University of Southampton

Stimulated Brillouin scattering is the nonlinear effect with the lowest threshold and narrowest linewidth. Additionally, the SBS gain or loss transfer function can be tailored. This makes it an ideal candidate for signal processing.

Authors:Thomas Schneider/Technische Universität Braunschweig

We demonstrate a broadband Brillouin filter for optical carrier recovery, which extends the operation range of the conventional filter from 2 nm to 10 nm in C-band, with a relatively flat gain and noise profile.

Authors:Atiyeh Zarifi/University of Sydney Moritz Merklein/University of Sydney Yang Liu/University of Sydney Amol Choudhary/Indian Institute of Technology Benjamin Eggleton/University of Sydney Bill Corcoran/Monash University

Wavelength conversion of 20 Gb/s quadrature phase shift keying (QPSK) signals is demonstrated in a tapered silicon core fiber extending across the S-, C- and L-bands. The results indicate the platform's suitability for use in broadband all-optical communication systems.

Authors:Dong Wu/Optoelectronics Research Centre Li Shen/Optoelectronics Research Centre Cosimo Lacava/Optoelectronics Research Centre periklis petropoulos/Optoelectronics Research Centre John Ballato/COMSET Ursula Gibson/Department of Physics and Porelabs Anna Peacock/Optoelectronics Research Centre

We experimentally investigate a recently-proposed thermodynamic theory of highly multimode nonlinear optical systems. Mode-resolved measurements demonstrate thermalization of the distribution via the Kerr nonlinearity in multimode optical fiber.

Authors:Hamed Pourbeyram/Cornell University Pavel Sidorenko/Cornell University Fan Wu/University of Central Florida Demetrios Christodoulides/University of Central Florida Frank Wise/Cornell University

We demonstrate a three-wavelength, time-synchronized, ultrashort (~90 fs), energetic (~6.5 nJ) pulse source from a single fiber aperture, uniquely enabled by the recently discovered process of soliton self-mode conversion.

Authors:Havva Begüm Kabagöz/Boston University Siyuan Zhang/Boston University Siddharth Ramachandran/Boston University Lars Sogaard Rishoj/Technical University of Denmark Aku Antikainen/Boston University

We report a coherent Ising machine for solving combinatorial optimization problems, which uses time-multiplexed degenerate optical parametric oscillator pulses generated in a 1-km fiber cavity to represent the Ising spins.

Authors:Hiroki Takesue/NTT Basic Research Laboratories Takahiro Inagaki/NTT Basic Research Laboratories Kensuke Inaba/NTT Basic Research Laboratories Takuya Ikuta/NTT Basic Research Laboratories Yasuhiro Yamada/NTT Basic Research Laboratories Toshimori Honjo/NTT Basic Research Laboratories

We show deep reinforcement learning for phase stabilization in tiled aperture coherent beam combining. The trained agent was able to stabilize the phase using only a far-field image as input.

Authors:Henrik Tuennermann/University of Electro-Communications Akira Shirakawa/University of Electro-Communications

We demonstrate how to control the polarization-resolved temporal impulse response of transmitted light through a multimode fiber. We show enhancing or attenuating the total temporal impulse response at arbitrary delays and polarization states.

Authors:Mickael Mounaix/The University of Queensland Joel Carpenter/The University of Queensland

We demonstrate coherent control of light through bespoke laser written photonic lanterns. This enables imaging in a variety of new situations, with potential applications to micro-endoscopy, chip-based LIDAR, and microfluidic imaging.

Authors:Shuhui Li/University of Exeter Duncan McNicholl/Heriot Watt University Graeme Whyte/Heriot Watt University Tim Birks/University of Bath Robert Thomson/Heriot Watt University David Phillips/University of Exeter

We generated time-multiplexed degenerate optical parametric oscillator pulses using a nonlinear fiber Sagnac interferometer. We confirmed that the phases of pulses were bifurcated to 0 or π, which makes them useful for simulating Ising spins.

Authors:Hsin Pin Lo/NTT Basic Research Laboratories Takahiro Inagaki/NTT Basic Research Laboratories Toshimori Honjo/NTT Basic Research Laboratories Hiroki Takesue/NTT Basic Research Laboratories

We present a deep learning-based image reconstruction framework for color holographic microscopy, which requires a single hologram taken using three wavelengths, simultaneously illuminating the specimen, to reconstruct its color images.

Authors:Tairan Liu/University of California, Los Angeles Zhensong Wei/University of California, Los Angeles Yair Rivenson/University of California, Los Angeles Kevin Haan/University of California, Los Angeles Yibo Zhang/University of California, Los Angeles Yichen Wu/University of California, Los Angeles Aydogan Ozcan/University of California, Los Angeles

Misuse of antibiotics causes bacteria to develop antibiotic-resistance. Biodynamic imaging (BDI) of living tissue infected by E. coli detects antibiotic resistance and sensitivity by treating bacterial infections with antibiotics in vitro.

Authors:Honggu Choi/Purdue University Jessica Zuponcic/Purdue University Eduardo Ximenes/Purdue University John Turek/Purdue University Michael Ladisch/Purdue University David Nolte/Purdue University

We review recent advances in human in vivo ultra-widefield retinal imaging and optical coherence tomography, discuss emerging new technologies, and consider potential opportunities and implications for clinical research and practice.

Authors:Conor Leahy/Carl Zeiss Meditec, Inc. Jochen Straub/Carl Zeiss Meditec, Inc.

In this work, we propose a label-free COSI system to quantify morphological changes and platelet activity along non-patterned collagen fibres within milliseconds in microfluidics channels underflow at sub-platelet imaging resolution.

Authors:Yujie Zheng/Australian National University Samantha Montague/Australian National University Yean Lim/Australian National University Tienan Xu/Australian National University Elizabeth Gardiner/Australian National University Woei Ming Lee/Australian National University

The higher capacity of Laguerre-Gaussian vortex beams of penetrating turbid media (e.g. biological fluids) with respect to conventional Gaussian beams is, for the first time, demonstrated in the 1.3µm-wavelength range commonly used for intravascular OCT.

Authors:Francesco di Bartolo/University of Pisa Muhammad Malik/Sant'Anna School of Advanced Studies Mirco Scaffardi/CNIT-National Inter-University Consortium for Telecommunication Antonella Bogoni/Sant'Anna School of Advanced Studies Simona Celi/Fondazione Toscana Gabriele Monasterio Antonio Malacarne/Sant'Anna School of Advanced Studies

A tandem Mach-Zehnder directional coupler (MZDC) demonstrates maximally flat wavelength-insensitive optical power divider compared with directional coupler and MZDC. Its 100-nm wavelength response could enhance the signal-to-noise ratio of optical coherence tomography up to 24-dB.

Authors:Yi-Ting Lu/National Taiwan Univ of Science & Tech Benedictus Yohanes Bagus Widhianto/National Taiwan Univ of Science & Tech Shih-Hsiang Hsu/National Taiwan Univ of Science & Tech

We experimentally demonstrate an electro-optic spectral bandwidth conversion of broadband single-photon pulses by more than 2 orders of magnitude to sub-2 GHz bandwidth. The results will enable photonic quantum network interfaces.

Authors:Filip Sośnicki/University of Warsaw Michal Mikolajczyk/University of Warsaw Ali Golestani/University of Warsaw Adam Widomski/University of Warsaw Michal Karpinski/University of Warsaw

We show that through engineering symmetric group velocity, frequency con-
version by Bragg-scattering four-wave mixing can be phase matched over ultra-broad band-
widths, enabling highly adaptable frequency conversion interfaces for quantum networks.

Authors:Charlotte Parry/University of Bath Philip Main/University of Bath Thomas Wright/University of Bath Peter Mosley/University of Bath

Two-photon microscopy (TPM) with entangled photons may provide significant enhancements over classical TPM. Though previously little explored, here we demonstrate via a unique Franson interferometer, the robust maintenance of entanglement through millimeters of bio-samples.

Authors:Daniel Lum/NIST Michael Mazurek/NIST Alexander Mikhailov/JILA Kristen Parzuchowski/JILA Ryan Willson/JILA Marcus Cicerone/NIST Ralph Jimenez/NIST Thomas Gerrits/NIST Martin Stevens/NIST Charles Camp/NIST

We propose and experimentally demonstrate a reconfigurable radiofrequency (RF)-photonic sensor network comprised of three entangled sensor nodes to increase the precision of parameter estimation in networked RF sensing tasks.

Authors:Yi Xia/University of Arizona Wei Li/University of Arizona William Clark/General Dynamics Darlene Hart/General Dynamics Quntao Zhuang/University of Arizona Zheshen Zhang/University of Arizona

We propose a scheme to measure the time delay between two optical paths using frequency-bin entangled biphotons and show picosecond-scale features by mixing several frequency bins using electro-optic phase modulation.

Authors:Suparna Seshadri/Purdue University Poolad Imany/Purdue University Navin Lingaraju/Purdue University Daniel Leaird/Purdue University Andrew Weiner/Purdue University

We use an acousto-optical modulator as a rapidly steerable mirror to multiplex several static patterns on a spatial light modulator, demonstrating both generation and projection of 5 spatial modes of light, with up to 500 kHz bandwidth.

Authors:Boris Braverman/University of Ottawa Alexander Skerjanc/University of Ottawa Nicholas Sullivan/University of Ottawa Robert Boyd/University of Ottawa

We present an original non-local ghost measurement scheme with polarization-entangled photons, where nanostructured dielectric metasurfaces enable discrimination between a set of objects with different polarization characteristics, including fully or partially transparent birefringent elements.

Authors:Andres Vega/Friedrich Schiller University Jena Kai Wang/Australian National University Shaun Lung/Australian National University Daniel Jones/U.S. Army Research Laboratory Michael Brodsky/U.S. Army Research Laboratory Thomas Pertsch/Friedrich Schiller University Jena Frank Setzpfandt/Friedrich Schiller University Jena Andrey Sukhorukov/Australian National University

We develop and experimentally realize all-dielectric metasurfaces that can transform any input two-photon polarization-entangled state to an arbitrary target state, achieving a tailored control over the degree of entanglement through a theoretically optimal non-Hermitian operation.

Authors:Shaun Lung/Australian National University Kai Wang/Australian National University Khosro Zangeneh/Australian National University Mohsen Rahmani/Australian National University Dragomir Neshev/Australian National University Andrey Sukhorukov/Australian National University

Extraordinary progress in quantum sensors and technologies opens new avenues for exploring the Universe and testing fundamental physics postulates. The development of the quantum technologies may answer the many persisting questions such as the nature or dark matter and if fundamental constants actually vary with time. I will discuss the future development of quantum sensors and their applications towards discoveries of new physics, with a particular emphasis on the atomic and nuclear clocks.

Marianna Safronova is a Professor of Physics at the University of Delaware. Her diverse research interests include applications of quantum technologies to tests of fundamental physics, quantum many-body theory, atomic clocks, and others. She is a Fellow of the American Physical Society (APS) and 2018-2019 Chair of DAMOP, APS.

Authors:Marianna Safronova/University of Delaware

We generate 10-GHz microwaves, derived from independent Yb optical clocks, with 2.4×10^-18 absolute fractional frequency stability, no significant offset at the 10^-19 level, and femtosecond-precision transfer of the optical clock phase to the microwave domain.

Authors:Takuma Nakamura/National Inst. of Standards & Technology Josue Davila-Rodriguez/National Inst. of Standards & Technology Holly Leopardi/National Inst. of Standards & Technology Jeff Sherman/National Inst. of Standards & Technology Tara Fortier/National Inst. of Standards & Technology Xiaojun Xie/University of Virginia Joe Campbell/University of Virginia Scott Diddams/National Inst. of Standards & Technology Will McGrew/National Inst. of Standards & Technology Xiaogang Zhang/National Inst. of Standards & Technology Youssef Hassan/National Inst. of Standards & Technology Daniele Nicolodi/National Inst. of Standards & Technology Andrew Ludlow/National Inst. of Standards & Technology Franklyn Quinlan/National Inst. of Standards & Technology

We report the development of a field-deployable frequency comb operated as clockwork for transportable Sr-clocks. While referencing it at ~194.4THz, we characterize spectral lines at ~214.6THz. Prospects on complete Sr-lattice laser systems will be outlined.

Authors:Michele Giunta/Menlo Systems GmbH Marc Fischer/Menlo Systems GmbH Nikolai Lilienfein/Menlo Systems GmbH Martin Wolferstetter/Menlo Systems GmbH Simon Holzberger/Menlo Systems GmbH Sarah Saint-Jalm/Menlo Systems GmbH Florian Skopnik/Menlo Systems GmbH Maurice Lessing/Menlo Systems GmbH Wolfgang Hänsel/Menlo Systems GmbH Ronald Holzwarth/Menlo Systems GmbH

The recent progress of optical lattice clocks has improved the accuracies to 10^-18. We will present the development of the optical lattice clocks and their applications in geodetic measurements.

Authors:Masao Takamoto/RIKEN

We demonstrated optically pumped GeSn lasers operating at 270 K and 3.5 µm, and photodetectors with spectral response cutoff at 3.65 µm and 300 K. Latest progress on electrically injected lasers will also be reported.

Authors:Yiyin Zhou/University of Arkansas Huong Tran/University of Arkansas Wei Du/Wilkes University Jifeng Liu/Dartmouth College Greg Sun/University of Massachusetts Boston Richard Soref/University of Massachusetts Boston Joe Margetis/ASM John Tolle/ASM Yong-Hang Zhang/Arizona State University Baohua Li/Arktonics, LLC Mansour Mortazavi/University of Arkansas at Pine Bluff Shuiqing Yu/University of Arkansas

In this presentation we will discuss the influence of GeSn band structure tuning via strain on the GeSn/SiGeSn laser properties with accent on optical pumping laser threshold and laser temperature operation.

Authors:Dan Buca/Forschungszentrum Jülich GmbH Andreas Tiedermann/Forschungszentrum Jülich GmbH Jean-Michel Hartmann/CEA, LETI Zoran Ikonic/University of Leeds Moustafa El Kurdi/Université Paris Sud Detlev Gruetzmacher/Forschungszentrum Jülich GmbH

First-principle calculations combined with Monte Carlo sampling demonstrate the existence of local, partial atomic ordering in GeSn alloys. This non-ideal behavior has a few important implications on alloy’s stability and electronic structures.

Authors:Tianshu Li/George Washington University Boxiao Cao/George Washington University Xiaochen Jin/George Washington University

We will discuss a development of high operating temperature type-II superlattices detectors. Our goal is to elevate the operating temperature of the sensor to reduce the size, weight, and power of the remote sensing instruments.

Authors:Sarath Gunapala/Jet Propulsion Laboratory David Ting/Jet Propulsion Laboratory Alexander Soibel/Jet Propulsion Laboratory Arezou Khoshakhlagh/Jet Propulsion Laboratory Sir Rafol/Jet Propulsion Laboratory Cory Hill/Jet Propulsion Laboratory Sam Keo/Jet Propulsion Laboratory Anita Fisher/Jet Propulsion Laboratory Brian Pepper/Jet Propulsion Laboratory

We engineer the nonlinear response of multilayered systems by employing the optical response of Arsenide semiconductor materials. The photoexcited carriers lead to spectral, temporal, and polarization dependent optical response that is described herein. The response is suggestive of generating a transient hyperbolic materials response in this system. Exploration of this response and the use of these materials as a basis for nonlinear metasurfaces is discussed.

Authors:Augustine Urbas/ US Air Force Research Laboratory

The changing balance of forces at the nanoscale allows functional metamaterials in which electromagnetic forces, thermal stimulation, sound and optical signals can be engaged to dynamically change their optical properties.

Authors:Nikolay Zheludev/University of Southampton Dimitrios Papas/University of Southampton Tongjun Liu/University of Southampton Jinxiang Li/University of Southampton Qiang Zhang/University of Southampton Jun-Yu Ou/University of Southampton Eric Plum/University of Southampton Kevin MacDonald/University of Southampton

We demonstrated a varifocal metalens based on the low-loss optical phase-change material Ge₂Sb₂Se₄Te₁ (GSST). The lens features diffraction-limited performance and full 2π phase tuning range. Aberration- and crosstalk-free imaging using the lens was also demonstrated.

Authors:Mikhail Shalaginov/Massachusetts Institute of Technology sensong an/University of Massachusetts Lowell Yifei Zhang/Massachusetts Institute of Technology Fan Yang/Massachusetts Institute of Technology Peter Su/Massachusetts Institute of Technology Vladimir Liberman/Lincoln Laboratory Jeffrey Chou/Lincoln Laboratory Christopher Roberts/Lincoln Laboratory Myungkoo Kang/University of Central Florida Carlos Rios/Massachusetts Institute of Technology Qingyang Du/Massachusetts Institute of Technology clayton fowler/University of Massachusetts Lowell Anuradha Agarwal/Massachusetts Institute of Technology Kathleen Richardson/University of Central Florida Clara Rivero-Baleine/Lockheed Martin Corporation hualiang Zhang/University of Massachusetts Lowell Juejun Hu/Massachusetts Institute of Technology Tian Gu/Massachusetts Institute of Technology

Active modulation of near-field chiroptical couplings and handedness-selective valley behaviors in a monolayer semiconductor is achieved using plasmonic moiré chiral metamaterials (MCMs) with strong and dynamically tunable optical chirality.

Authors:Zilong Wu/University of Texas at Austin Jingang Li/University of Texas at Austin Yuebing Zheng/University of Texas at Austin

The approaches for design, fabrication, and measurement of the novel ultracompact nonlinear metasurface device for generation and manipulation of the coherent vacuum ultraviolet (VUV) light will be shown and discussed.

Authors:Din Ping Tsai/Hong Kong Polytechnic University Ming Lun Tseng/National Taiwan University Michael Semmlinger/Rice University Jiang Yang/Rice University Ming Zhang/Rice University Chao Zhang/Rice University Peter Nordlander/Rice University Naomi J. Halas/Rice University

We designed and fabricated two-dimensional optical beam steering chip based on X-cut LNOI wafer. The device can achieve a maximum angle of 18^° in the phase tuning dimension with about 10 dB side lobe suppression ratio.

Authors:Su Tan/Huazhong Univ of Science and Technology Jia Liu/Huazhong Univ of Science and Technology Ye Liu/Huazhong Univ of Science and Technology Heng Li/Huazhong Univ of Science and Technology Weihua Guo/Huazhong Univ of Science and Technology Qiaoyin Lu/Huazhong Univ of Science and Technology

We demonstrate a solid-state beam scanner based on VCSEL-integrated amplifier for 3D sensing. We realized a record beam-steering angle of 16 degrees with 200 resolution points. The integrated chip size is as small as 1 mm.

Authors:SHANTING HU/Tokyo Institute of Technology Masashi Takanohashi/Tokyo Institute of Technology Xiaodong Gu/Tokyo Institute of Technology Keisuke Shimura/Tokyo Institute of Technology Fumio Koyama/Tokyo Institute of Technology

We propose a new imaging scheme of compressed sensing by scanning an illumination pattern on the object. Comparing with conventional single-pixel cameras, we expect a >50x increase in imaging speed with similar imaging quality.

Authors:Kangning Zhang/University of California, Davis Junjie Hu/University of California, Davis Weijian Yang/University of California, Davis

We demonstrated a solid state LiDAR with a sensing distance range of over 40m by using a non-mechanical VCSEL beam-scanner. The depth accuracy of 22cm was obtained with a low peak-power of 0.2 W.

Authors:Ibuki Fujioka/Tokyo Institute of Technology Zeuku Ho/Tokyo Institute of Technology Xiaodong Gu/Tokyo Institute of Technology Fumio Koyama/Tokyo Institute of Technology

A FRAME (Frequency Recognition Algorithm for Multiple Exposures) system based on acousto-optic delflectors is proposed. This opens up for multispectral videography on the 100kHz timescale with a significant increase in the number of frames.

Authors:Vassily Kornienko/Lund University Elias Kristensson/Lund University Simon Ek/Lund University

We demonstrate millimetre-scale depth imaging up to 325 meters by deployment of a novel superconducting nanowire single-photon detector with 13 ps FWHM instrument response function at 1550 nm wavelength.

Authors:Gregor Taylor/University of Glasgow Aongus McCarthy/Heriot-Watt University Boris Korzh/Jet Propulsion Laboratory Andrew Beyer/Jet Propulsion Laboratory Dmitry Morozov/University of Glasgow Ryan Briggs/Jet Propulsion Laboratory Jason Allmaras/Jet Propulsion Laboratory Bruce Bumble/Jet Propulsion Laboratory Matthew Shaw/Jet Propulsion Laboratory Robert Hadfield/University of Glasgow Gerald Buller/Heriot-Watt University

Avalanche ionization allows detection of single electrons, analogous to photon counting in PMTs. Using a mid-IR, picosecond driver limits unwanted multi-photon ionization, enabling measurement of ultralow charge densities produced by radiation or ultrafast laser-gas interactions.

Authors:Howard Milchberg/University of Maryland at College Park Daniel Woodbury/University of Maryland at College Park

We report on compact, ultrafast, broadly tunable photodetectors exploiting cold-field electron tunneling from nanoantenna surfaces. We experimentally verify exponential sensitivity enhancement under a DC bias and examine the potential for sensing low-energy optical pulses.

Authors:Marco Turchetti/MIT Yujia Yang/MIT Mina Bionta/MIT Felix Ritzkowsky/DESY Michael Flatté/University of Iowa Karl Berggren/MIT Phillip D. Keathley/MIT

We show the capability of plasmonic lenses for next-generation ultrafast electron sources. Using electromagnetic simulation, we design structures for femtosecond, nanoscale electron pulses. Plasmonic properties of template-stripped gold prototypes are probed by cathodoluminescence spectromicroscopy.

Authors:Daniel Durham/University of California, Berkeley Fabrizio Riminucci/University of Salento Kostas Kanellopulos/Lawrence Berkeley National Laboratory Silvia Rotta Loria/Lawrence Berkeley National Laboratory Filippo Ciabattini/ETH Zurich Andrea Mostacci/University of Rome "La Sapienza" Andrew Minor/University of California, Berkeley Stefano Cabrini/Lawrence Berkeley National Laboratory Daniele Filippetto/Lawrence Berkeley National Laboratory

We show that nanophotonic structures enable the possibility of realizing lasers based on stimulated emission by free electrons. The associated threshold beam currents are in the nanoampere range, and could be realized in electron microscopes.

Authors:Nicholas Rivera/Massachusetts Institute of Technology Charles Roques-Carmes/Massachusetts Institute of Technology Ido Kaminer/Technion -- Israel Institute of Technology Marin Soljacic/Massachusetts Institute of Technology

Nanoporous gold can be tuned in its nanometer feature size without a change of porosity volume fraction. This allows studying the change in the optical damping and hot electron photoemission by electron collisions with the surface.

Authors:Alexander Petrov/Hamburg University of Technology Matthias Graf/Hamburg University of Technology Mahima Arya/Hamburg University of Technology Manfred Eich/Hamburg University of Technology

Using time-resolved reflection measurements in the Kretschmann configuration under fixed absorbed power, we observe a slowing of the hot-electron relaxation in gold films associated with coupling to surface plasmons.

Authors:Sarvenaz Memarzadeh/University of Maryland Jongbum Kim/University of California Yigit Aytac/Science Systems and Applications Inc Thomas Murphy/University of Maryland Jeremy Munday/University of California

A chiral metamaterial perfect absorber is theoretically studied and presented for plasmon-induced polarization-sensitive photochemistry involving hot electrons. The g-factor of Rate_HE reaches to 1.52, close to the theoretical upper limit of 2.

Authors:Wenhao Wang/University of Electronic Science and Technology of China Lucas Besteiro/University of Electronic Science and Technology of China Tianji Liu/University of Electronic Science and Technology of China Cuo Wu/University of Electronic Science and Technology of China Jiachen Sun/University of Electronic Science and Technology of China Peng Yu/University of Electronic Science and Technology of China Le Chang/University of Electronic Science and Technology of China Zhiming Wang/University of Electronic Science and Technology of China Alexander Govorov/University of Electronic Science and Technology of China

We show that optical microcavities drive strong coherent modulations the in co-propagating free-electron beams, with sidebands spanning over 700eV from a sub-µm-long interaction. The electrons probe the cavity’s ringdown time and distinguish the modes spectrally.

Authors:Ofer Kfir/University of Göttingen Hugo Lourenço-Martins/University of Göttingen Gero Storeck/University of Göttingen Murat Sivis/University of Göttingen Tyler Harvey/University of Göttingen Tobias Kippenberg/École Polytechnique Fédérale de Lausanne (EPFL) Armin Feist/University of Göttingen Claus Ropers/University of Göttingen

We generate multi-mJ, 10fs pulses at average powers beyond 300W by 30-times compression of the output of an Yb-fiber CPA in a 6m long stretched capillary. Further up-scaling of the parameters is in progress.

Authors:Tamas Nagy/Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy Steffen Hädrich/Active Fiber Systems GmbH Peter Simon/Laser-Laboratorium Göttingen e.V. Andreas Blumenstein/Laser-Laboratorium Göttingen e.V. Nico Walther/Active Fiber Systems GmbH Robert Klas/Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena Joachim Buldt/Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena Henning Stark/Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena Sven Breitkopf/Active Fiber Systems GmbH Peter Jojart/ELI-ALPS, ELI-HU Non-Profit Ltd. Imre Seres/ELI-ALPS, ELI-HU Non-Profit Ltd. Zoltán Várallyay/ELI-ALPS, ELI-HU Non-Profit Ltd. Tino Eidam/Active Fiber Systems GmbH Jens Limpert/Active Fiber Systems GmbH

The delayed optical nonlinearity of molecules is harnessed to generate a multi-octave supercontinuum and compress 280 fs pulses from a commercial Yb:KGW laser amplifier to sub-two cycle duration using an N₂O filled hollow-core fiber.

Authors:John Beetar/University of Central Florida Nrisimhamurty Madugula/University of Central Florida Tran-Chau Truong/University of Central Florida Garima Nagar/Binghamton University Yi Wu/University of Central Florida Bonggu Shim/Binghamton University Michael Chini/University of Central Florida

We generate 6.3mJ, sub-5fs pulses by compressing high-energy Ti:Sapphire laser pulses in a 3.75m long stretched capillary.

Authors:Tamas Nagy/Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy Martin Kretschmar/Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy Arnaud Rouzée/Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy

We demonstrate a technique for compensation of the idler angular chirp from an optical parametric amplifier in non-collinear geometry. This method enables generating broadband CEP-stable pulses for seeding high-energy optical parametric amplifiers.

Authors:Huseyin Cankaya/Deutsches Elektronen-Synchrotron (DESY) Giovanni Cirmi/Deutsches Elektronen-Synchrotron (DESY) peter Krogen/Massachusetts Institute of Technology (MIT) Anne-Laure Calendron/Deutsches Elektronen-Synchrotron (DESY) Yi hua/Deutsches Elektronen-Synchrotron (DESY) Benoit Debord/University of Limoges Frédéric Gérôme/University of Limoges Fetah Benabid/University of Limoges Franz X. Kaertner/Deutsches Elektronen-Synchrotron (DESY)

We demonstrate that resonant dispersive wave emission in hollow capillary fibres filled with a gas pressure gradient results in fast spectral tuneability and the generation of near transform-limited UV pulses.

Authors:Christian Brahms/Heriot-Watt University Federico Belli/Heriot-Watt University John Travers/Heriot-Watt University

We demonstrate experimentally that omni-resonance can be controlled by introducing the appropriate spatio-temporal spectral correlations into the field using a spatial light modulator. Such‘space-time’ fields can be used for resonant spectral notching and bandwidth control.

Authors:Abbas Shiri/University of Central Florida, CREOL Kenneth Schepler/University of Central Florida, CREOL Ayman Abouraddy/University of Central Florida, CREOL

We demonstrate how to generate arbitrary optical fields in the full C band (1535nm – 1570nm), by controlling simultaneously all the degrees of freedom of a light beam: spatial, polarization, spectral and temporal properties.

Authors:Mickael Mounaix/The University of Queensland Nicolas Fontaine/Nokia Bell Labs David Neilson/Nokia Bell Labs Roland Ryf/Nokia Bell Labs Haoshuo Chen/Nokia Bell Labs Juan Carlos Alvardo-Zacarias/Nokia Bell Labs Joel Carpenter/The University of Queensland

Using integrated acousto-optic cavities on thin-film lithium niobate, we demonstrate efficient conversion of GHz microwaves to 1.5 µm wavelength light via the piezoelectric effects and the optomechanical interactions.

Authors:Linbo Shao/Harvard University Mengjie Yu/Harvard University Smarak Maity/Harvard University Neil Sinclair/California Institute of Technology Lu Zheng/University of Texas at Austin Cleaven Chia/Harvard University Amirhassan Shams-Ansari/Harvard University Cheng Wang/Harvard University Mian Zhang/Harvard University Keji Lai/University of Texas at Austin Marko Loncar/Harvard University

Here we demonstrate a spectrally broadband, GHz-fast Mach Zehnder interferometer-based modulator deploying wavelength-compact phase-shifter heterogeneously integrating ENZ-near ITO films into silicon photonics utilizing a plasmonic mode.

Authors:Rubab Amin/The George Washington University Rishi Maiti/The George Washington University Yaliang Gui/The George Washington University Mario Miscuglio/The George Washington University Elham Heidari/University of Texas at Austin Ray Chen/University of Texas at Austin Hamed Dalir/Omega Optics, Inc. Volker Sorger/The George Washington University

An ultra-compact plasmonic resonator is experimentally demonstrated. The presented sub-mm long inline waveguide-coupled plasmonic resonator features a resonance around 1550 nm with a measured loaded quality factor of 20.

Authors:Ping Ma/ETH Zurich Xinzhi Zhang/ETH Zurich Yannick Salamin/ETH Zurich Juerg Leuthold/ETH Zurich

We show that the random localization of light caused by fabrication error can be used to enhance the resolution of a photonic crystal spectrometer by combining the data with deep learning and a global optimization process.

Authors:Takumasa Kodama/Keio University Jocelyn Hofs/Keio University Shengji Jin/Keio University Takasumi Tanabe/Keio University

We demonstrate an on-chip single photon SWAP gate between polarization and spatial-momentum qubit. Our SWAP gate shows gate fidelity of 97.44%, and polarization entanglement preservation of SWAP operation is confirmed with average visibility over 98%.

Authors:Xiang Cheng/University of California, Los Angeles KAI-CHI CHANG/University of California, Los Angeles Zhenda Xie/Nanjing University Yoo Seung Lee/University of California, Los Angeles Murat Sarihan/University of California, Los Angeles Abhinav Kumar/University of California, Los Angeles Yongnan Li/Nankai University Serdar Kocaman/Middle East Technical University Tian Zhong/University of Chicago Mingbin Yu/Institute of Microelectronics Dim-Lee Kwong/Institute of Microelectronics Jeffrey shapiro/Massachusetts Institute of Technology Franco Wong/Massachusetts Institute of Technology Chee Wei Wong/University of California, Los Angeles

We harness the near-field enhancement of plasmonic metamaterials to probe the electro-optic response from 50nm BaTiO₃ nanoparticles, with low actuation voltage <8V and modulation speeds up to MHz regime, in the near-infrared.

Authors:Artemios Karvounis/ETH Zurich Viola Vogler-Neuling/ETH Zurich Felix Richter/ETH Zurich Rachel Grange/ETH Zurich

We experimentally demonstrate a thermally tunable polymer-embedded silicon nitride nanobeam cavity with a tuning efficiency of 44 pm/°C and 0.13 nm/mW in the near-visible wavelength range. The demonstrated resonator paves the path for the future development of reconfigurable SiN photonics platform.

Authors:Yueyang Chen/University of Washington James Whitehead/University of Washington Albert Ryou/University of Washington Jiajiu Zheng/University of Washington Peipeng Xu/University of Washington Taylor Fryett/University of Washington Arka Majumdar/University of Washington

TEM₀₀-shaped continuous-wave 6-dB-squeezed light was obtained from a single-mode periodically poled ZnO:LiNbO₃ waveguide with a 2.5-THz optical-parametric-amplification bandwidth. The results will lead to the development of high-speed on-chip optical quantum processors with time-domain multiplexing.

Authors:Takahiro Kashiwazaki/NTT Corporation Naoto Takanashi/The University of Tokyo Taichi Yamashima/The University of Tokyo Takushi Kazama/NTT Corporation Koji Enbutsu/NTT Corporation Ryoichi Kasahara/NTT Corporation Takeshi Umeki/NTT Corporation Akira Furusawa/The University of Tokyo

We show repetition-rate locking of two passively mode-locked laser systems in order to prepare a genuine local oscillator. We demonstrate the potential of this system by measuring two-mode squeezing with photon counting.

Authors:Johannes Tiedau/University of Paderborn Christof Eigner/University of Paderborn Victor Quiring/University of Paderborn Laura Padberg/University of Paderborn Raimund Ricken/University of Paderborn Jan Sperling/University of Paderborn Benjamin Brecht/University of Paderborn Tim Bartley/University of Paderborn Christine Silberhorn/University of Paderborn

We report a novel method that measures directly the exact form of temporal modes. We then apply the method to a pulse-pumped parametric amplifier and demonstrate telecom band temporally multiplexed multi-dimensional continuous variables quantum entanglement.

Authors:Xiaoying Li/Tianjin University Nan Huo/Tianjin University Yuhong Liu/Tianjin University Jiamin Li/Tianjin University Xin Chen/Indiana University-Purdue University Indianapolis Z. Y. Ou/Tianjin University

We propose a measurement-free construction of a cubic phase gate based on a Kerr nonlinearity and Gaussian transformations. Experimental feasibility is discussed for pulsed nanophotonic waveguides where quantum states are encoded into quantum solitons.

Authors:Ryotatsu Yanagimoto/Stanford University Tatsuhiro Onodera/Stanford University Edwin Ng/Stanford University Logan Wright/Cornell University Peter McMahon/Cornell University Hideo Mabuchi/Stanford University

We present a theory of radiation in accelerated quantum electrodynamics which is manifestly thermalized at the accelerated temperature. Statistical analysis of a recent channeling radiation experiment implies the first observation of the Unruh effect.

Authors:Morgan Lynch/Technion - Israel Institute of Technology Eliahu Cohen/Bar Ilan University Yaron Hadad/University of Arizona Ido Kaminer/Technion - Israel Institute of Technology

Frequency-bin qudits constitute a promising tool for quantum information processing. Here we use compressive sensing to characterize the spectral correlations of entangled photon pairs in a quantum frequency comb, obtaining a 26-fold reduction in measurement time compared to raster scanning.

Authors:Emma Simmerman/Oak Ridge National Laboratory Hsuan-Hao Lu/Purdue University Andrew Weiner/Purdue University Joseph Lukens/Oak Ridge National Laboratory

We generate biphotons with degree of polarisation entanglement that varies over a concurrence range 0.12<C<0.97, depending on the frequency of biphotons. Our interferometric scheme offers a convenient means towards the generation of arbitrary biphoton states.

Authors:Arash Riazi/University of Toronto Changjia Chen/University of Toronto Eric Zhu/University of Toronto Alexey Gladyshev/Russian Academy of Science Peter Kazansky/University of Southampton, Southampton John Sipe/University of Toronto Li Qian/University of Toronto

We observe for the first time high-quality modes in subwavelength dielectric resonators. Such modes result from interference of two dissimilar leaky modes, and they are governed by the physics of bound states in the continuum

Authors:Kirill Koshelev/Australian National University Sergey Kruk/Australian National University Mikhail Odit/ITMO University Elizaveta Melik-Gaykazyan/Australian National University Jae-Hyuck Choi/Korea University Sergey Gladyshev/ITMO University Konstantin Ladutenko/ITMO University Hong-Gyu Park/Korea University Andrey Bogdanov/ITMO University Yuri Kivshar/Australian National University

We leverage the very large conduction band offset of InAs/AlSb heterostructures and demonstrate coupling between a plasmonic metasurface and intersubband transitions at near-infrared wavelengths. The same nonlinear metasurface can be used for third harmonic generation.

Authors:Sebastian Gies/Sandia National Laboratories Raktim Sarma/Sandia National Laboratories Nicholas Karl/Sandia National Laboratories Michael Goldflam/Sandia National Laboratories John Klem/Sandia National Laboratories Igal Brener/Sandia National Laboratories

We demonstrate mixed-order nonlinear frequency mixing in Au antennas and reveal the role of high order antenna modes in Pancharatnam-Berry Phase metasurfaces. The application of ultrafast pulse characterization is explored.

Authors:Sylvain Gennaro/Imperial College London Yi Li/Imperial College London Sefan Maier/Imperial College London Rupert Oulton/Imperial College London

We show four-wave-mixing over micron scales with 1% signal-to-idler conversion efficiency enabled by strong non-linearities and highly confined fields. We also demonstrate low-loss incoupling into nanometer gaps with an efficiency of 80%.

Authors:Nicholas Gusken/Imperial College London Michael Nielsen/Imperial College London Ngoc Nguyen/Imperial College London Xingyuan Shi/Imperial College London Paul Dichtl/Imperial College London Sefan Maier/Imperial College London Rupert Oulton/Imperial College London

Largely enhanced SHG were obtained from dolmen-type Au nanotrimer structures. SHG conversions due to hybridized plasmon mode with quadrupolar feature were one magnitude higher than that due to normal dipolar mode localized in individual nanoparticles.

Authors:Atsushi Sugita/Shizuoka University Yohsei Nakatsuka/Shizuoka University Atsushi Ono/Shizuoka University Wataru Inami/Shizuoka University Yoshimasa Kawata/Shizuoka University

We demonstrate all-optically tunable second-harmonic generation (SHG) in GaAs nanowires via nonlinear absorption. This approach enables near-infrared SHG modulation up to 60% and offers new opportunities for nonlinear applications and all-optical ultrafast modulation.

Authors:Luca Carletti/Universita degli Studi di Padova Domenico de Ceglia/Universita degli Studi di Padova Maria Vincenti/University of Brescia Costantino De Angelis/University of Brescia

We experimentally demonstrate nonlinear frequency mixing of photons with non-degenerate energy and polarization in (110)-grown GaAs nanoresonators. Based on quantum-classical correspondence we predict down-conversion processes allowing for linear, non-degenerate polarization states.

Authors:Maximilian Weissflog/Friedrich Schiller University Jena Marcus Cai/Australian National University Matthew Parry/Australian National University Mohsen Rahmani/Australian National University Lei Xu/University of New South Wales Anna Fedotova/Friedrich Schiller University Jena Giuseppe Marino/Université Paris Diderot-CNRS Mykhaylo Lysevych/Australian National University Hoe Tan/Australian National University Chennupati Jagadish/Australian National University Andrey Miroshnichenko/University of New South Wales Giuseppe Leo/Université Paris Diderot-CNRS Andrey Sukhorukov/Australian National University Frank Setzpfandt/Friedrich Schiller University Jena Thomas Pertsch/Friedrich Schiller University Jena Isabelle Staude/Friedrich Schiller University Jena Dragomir Neshev/Australian National University

Based on an optical mode degeneracy, we observe the non-Abelian Aharonov--Bohm effect by synthesizing non-Abelian gauge fields in real space, enabled by multiple time-reversal symmetry breaking in orthogonal bases of the Hilbert space.

Authors:Yi Yang/Massachusetts Institute of Technology Chao Peng/Peking University Di Zhu/Massachusetts Institute of Technology Hrvoje Buljan/University of Zagreb John Joannopoulos/Massachusetts Institute of Technology Bo Zhen/UPenn Marin Soljacic/Massachusetts Institute of Technology

A uniform non-Hermitian material can exhibit a state where non-Hermicity, i.e. gain and loss, only manifests on the edge but not in the bulk. This effect is protected by the bulk topology and parity-time symmetry.

Authors:Alex Song/Stanford University Xiao-Qi Sun/Stanford University Avik Dutt/Stanford University Momchil Minkov/Stanford University Casey Wojcik/Stanford University Haiwen Wang/Stanford University Ian Williamson/Stanford University Meir Orenstein/Technion - Israel Institute of Technology Shanhui Fan/Stanford University

Thouless pumping is intrinsically an adiabatic effect, which breaks down at finite driving frequencies. We demonstrate both theoretically and experimentally that using time-periodic dissipation Thouless pumping can be restored outside of the adiabatic limit.

Authors:Zlata Fedorova/Physikalisches Institut Universität Bonn Stefan Linden/Physikalisches Institut Universität Bonn Haixin Qiu/Physikalisches Institut Universität Bonn Johann Kroha/Physikalisches Institut Universität Bonn

We demonstrate experimentally dispersionless flat bands with parity-time symmetry. To this end, we employ precisely tailored losses in laser-written waveguide arrays as key ingredient to manage light propagation and suppress diffractive broadening.

Authors:Tobias Biesenthal/University of Rostock Mark Kremer/University of Rostock Matthias Heinrich/University of Rostock Alexander Szameit/University of Rostock

We propose a deterministic method to generate off-Γ bound states in the continuum (BICs): an at-Γ BIC with charge -2 can split into two off-Γ BICs by breaking C₆ symmetry through the charge conservation.

Authors:Taiki Yoda/Tokyo Institute of Technology Masaya Notomi/Tokyo Institute of Technology

We numerically demonstrate that the corner-localized boundary states of a higher-order topological system are bound states in the continuum, demonstrating that bulk-boundary correspondence holds even in the absence of a bandgap.

Authors:Alexander Cerjan/Pennsylvania State University Marius Jürgensen/Pennsylvania State University Wladimir Benalcazar/Pennsylvania State University Sebabrata Mukherjee/Pennsylvania State University Mikael Rechtsman/Pennsylvania State University

We present a new approach for multi-section broadband impedance matching, overcoming structural and material dispersion. The transformer constitutes a critically-coupled white light cavity, thus minimizing reflectivity. The approach is demonstrated in the millimeter waves band.

Authors:Jacob Scheuer/Tel-Aviv University Dimitry Filonov/Tel-Aviv University Pavel Ginzburg/Tel-Aviv University

The development of interband and quantum cascade lasers has made the mid-infrared region available for challenging in-situ industrial applications. This presentation provides an overview of real-world applications using this new technology.

Authors:Peter Geiser/NEO Monitors AS

We have demonstrated waveguide-enhanced Raman spectroscopy using compact Raman spectrometers for handheld detectors of vapor phase threat materials. Polymer sorbents are used to concentrate the vapors in the evanescent field of the waveguide.

Authors:Erik Emmons/US Army CCDC CBC Phillip Wilcox/US Army CCDC CBC Jason Guicheteau/US Army CCDC CBC Nathan Tyndall/Naval Research Laboratory Dmitry Kozak/Naval Research Laboratory Marcel Pruessner/Naval Research Laboratory Courtney Roberts/Naval Research Laboratory Andrew McGill/Naval Research Laboratory Todd Stievater/Naval Research Laboratory Benjamin Miller/University of Rochester Medical Center Matthew Yates/University of Rochester Medical Center Ethan Luta/University of Rochester Medical Center

Atmospheric gas sensing of a 200 m open path has been achieved by a digitally calibrated dual-comb spectrometer. A spectrum spanning over 10 THz has been obtained with a residual of less than 2%.

Authors:Xinyi Chen/Tsinghua University Weipeng Zhang/Tsinghua University Yan Li/Tsinghua University Haoyun Wei/Tsinghua University

We report a high-energy narrow-linewidth SBS-free high-efficiency PM fiber laser based on MOPA at 1572 nm for CO₂ coherent remote sensing. The seed laser linewidth is <10 kHz, the fiber amplifier output pulse energy is >150 uJ, with tunable repetition rate of 1 k~1 MHz and pulse width of 100~500 ns.

Authors:Song Sun/Laser Institute, Qilu University of Technology(Shandong Academy of Sceinces) Wei Yan/Laser Institute, Qilu University of Technology(Shandong Academy of Sceinces) Lisha Wang/Laser Institute, Qilu University of Technology(Shandong Academy of Sceinces) Fei Liu/Laser Institute, Qilu University of Technology(Shandong Academy of Sceinces) Yong Wang/Laser Institute, Qilu University of Technology(Shandong Academy of Sceinces)

A laser sensor is developed for trace detection of benzene. It is based on a DFB-ICL near 3.3 µm and off-axis cavity-enhanced absorption, enabling minimum detection of 2 ppb for 6-second integration at room conditions.

Authors:Mhanna Mhanna/KAUST Guangle Zhang/KAUST noushad kunnummal/Saudi Aramco Aamir Farooq/KAUST

We present new optical fiber designs for silicon photonic chip packing applications, including Titania-clad bend-insensitive fiber for surface coupling, D-shaped fiber for evanescent wave coupling and multicore fiber for edge coupling.

Authors:Ming-Jun Li/Corning Incorporated

The size/complexity of coupling structures printed with direct laser writing at the ports of photonic chips is increased by printing parallel to the ports' axes. We demonstrate robust automated laser writing using passive alignment.

Authors:Edgar Perez/University of Maryland Xiyuan Lu/University of Maryland Daron Westly/National Institute of Standards and Technology Kartik Srinivasan/National Institute of Standards and Technology

We present a new and high-performance coupling scheme based on microfabricated free-form optical reflectors that can be versatility adapted for on-chip optical couplings between photonic chips, fibers, and free-space surface-incident devices.

Authors:Shaoliang Yu/MIT Haijie Zuo/MIT Xiaochen Sun/LaXense Inc. Jifeng Liu/Dartmouth College Tian Gu/MIT Juejun Hu/MIT

We demonstrate a 3D vertical coupler array design realizing efficient 4-way multi-core fiber to chip coupling via two-photon lithography on SOI platform, structure shows 3dB insertion loss and wide bandwidth is useful in space-division multiplexing.

Authors:Lifeng Chen/Sun Yat-Sen University Haozhi Luo/Sun Yat-Sen University Xinlun Cai/Sun Yat-Sen University

We demonstrate adiabatically tapered fibers clad with a higher-index material for coupling to an on-chip waveguide. The loss from fiber to a sub-micron waveguide in a packaged device is 1.3 dB, and the 3 dB bandwidth is is 90 nm.

Authors:Saeed Khan/National Institute of Standards and Technology Sonia Buckley/National Institute of Standards and Technology Jeffrey Chiles/National Institute of Standards and Technology Sae Woo Nam/National Institute of Standards and Technology Richard Mirin/National Institute of Standards and Technology Jeffrey Shainline/National Institute of Standards and Technology

We show a mode converter between silicon and polymer waveguides compatible with few-mode fibers for mode-division multiplexing. We convert 4 TE modes of a silicon waveguide to the TE₁₁, TM₁₁, TE₂₁, TM₂₁ modes of a polymer.

Authors:Oscar Jimenez Gordillo/Columbia University Utsav Dave/Columbia University Michal Lipson/Columbia University

We propose an efficient and robust adiabatic-crossing coupler for a μ-transfer printed III-V/Si platform. Two-stage GaInAsP/InP tapers equipped with a side terrace are designed to maximize the efficiency (1.26 dB/coupling on average) and bonding area.

Authors:Rai Kou/National Institute of Advanced Industrial Science and Technology (AIST) Takuo Hiratani/Sumitomo Electric Industries, Ltd Hideki Yagi/Sumitomo Electric Industries, Ltd Haruhiko Kuwatsuka/National Institute of Advanced Industrial Science and Technology (AIST) Makoto Okano/National Institute of Advanced Industrial Science and Technology (AIST) Morifumi Ohno/National Institute of Advanced Industrial Science and Technology (AIST) Hitoshi Kawashima/National Institute of Advanced Industrial Science and Technology (AIST) Keijiro Suzuki/National Institute of Advanced Industrial Science and Technology (AIST) Naoki Fujiwara/Sumitomo Electric Industries, Ltd Hajime Shoji/Sumitomo Electric Industries, Ltd Koji Yamada/National Institute of Advanced Industrial Science and Technology (AIST)

We report on the first demonstration of high-speed optical modulation exploiting Pockels effect in strained silicon waveguides. Bandwidths larger than 20 GHz and low insertion loss have been achieved at a wavelength of 1550 nm.

Authors:Christian Lafforgue/Universite Paris Saclay, CNRS Mathias Berciano/Universite Paris Saclay, CNRS Lucas Deniel/Universite Paris Saclay, CNRS Guillaume Marcaud/Universite Paris Saclay, CNRS Xavier Le Roux/Universite Paris Saclay, CNRS Carlos Alonso-Ramos/Universite Paris Saclay, CNRS Daniel Benedikovic/Universite Paris Saclay, CNRS Vladyslav Vakarin/Universite Paris Saclay, CNRS Alicia Ruiz-Caridad/Universite Paris Saclay, CNRS Paul Crozat/Universite Paris Saclay, CNRS Delphine Marris-Morini/Universite Paris Saclay, CNRS Eric Cassan/Universite Paris Saclay, CNRS Laurent Vivien/Universite Paris Saclay, CNRS

We experimentally demonstrated a novel silicon microring modulator driven by transparent conductive oxide capacitor, achieving a large tuning efficiency of 95 pm/V. Analysis indicates that a potential high-speed operation above 44GHz can be reached.

Authors:Erwen Li/Oregon State University Bokun Zhou/Oregon State University Wei-Che Hsu/Oregon State University Alan Wang/Oregon State University

We provide measurement and simulation data of optical free-carrier generation in SOI phase shifters. We conclude that phase impairments caused by unwanted free-carriers can be equalized with an ~50% increase in phase-shifter diode current.

Authors:Clemens Krueckel/Ghent University Joris Van Campenhout/IMEC Dries Van Thourhout/Ghent University

We demonstrate horizontal-slot plasmonic-organic hybrid (HS-POH) modulators and show that the π-voltage-loss product aU_πL is by 25% better than for conventional vertical-slot devices. The slot is realized by a sacrificial layer, thereby relaxing extreme lithography-resolution requirements.

Authors:Sandeep Ummethala/Karlsruhe Institute of Technology Venkata Anirudh Pammi/Karlsruhe Institute of Technology Ahsan H. M. Uddin/Karlsruhe Institute of Technology Lothar Hahn/Karlsruhe Institute of Technology Wolfgang Freude/Karlsruhe Institute of Technology Christian Koos/Karlsruhe Institute of Technology

A surface acoustic wave modulator is implemented in standard silicon-on-insulator. Acoustic waves are stimulated by absorption of pump light in metallic patterns and thermo-elastic expansion, and modulate probe light in a defect waveguide grating cavity.

Authors:Dvir Munk/Bar-Ilan University Moshe Katzman/Bar-Ilan University Mirit Hen/Bar-Ilan University Maayan Priel/Bar-Ilan University Avi Zadok/Bar-Ilan University

We present a new electro-optics data storage device based on the combination of negative differential resistances and optical cavity, remarkable for its simplicity and its complete CMOS compatibility with power consumption around the nanoWatt

Authors:Rivka Gherabli/Hebrew University Roy Zektzer/Hebrew University Meir Grajower/Hebrew University Joseph Shappir/Hebrew University Menachem Wofsy/TowerJazz Naor Inbar/TowerJazz Uriel Levy/Hebrew University

We discuss the effects of laser frequency noise on the extinction ratio of typical integrated filters and amplitude modulators. It is shown that, even for spectrally-pure lasers, this noise inhibits realization of high extinction ratios.

Authors:Gavin West/Massachusetts Institute of Technology William Loh/MIT Lincoln Laboratory Dave Kharas/MIT Lincoln Laboratory Rajeev Ram/Massachusetts Institute of Technology

We report the observation of the transition to condensation of optical waves propagating in multimode fibers: below a critical value of the energy, the fundamental mode gets macroscopic populated, in agreement with the equilibrium theory.

Authors:KIlian Baudin/CNRS-UNiversite Bourgogne Franche-Comte Adrien Fusaro/CNRS-UNiversite Bourgogne Franche-Comte Katarzyna Krupa/CNRS-UNiversite Bourgogne Franche-Comte Josselin Garnier/Institut Polytechnique de Paris Claire Michel/University Cote d'Azur Sergio Rica/University Adolfo Ibanez Guy Millot/CNRS-UNiversite Bourgogne Franche-Comte Antonio Picozzi/CNRS-UNiversite Bourgogne Franche-Comte

We report efficient Raman conversion of vortex modes in twisted hydrogen-filled hollow-core photonic crystal fibers. Circular birefringence provides topological protection and broadband guidance of helically-phased modes over long distances.

Authors:Sona Davtyan/Max Planck Institute for the Science of Light David Novoa/Max Planck Institute for the Science of Light Yang Chen/Max Planck Institute for the Science of Light Michael Frosz/Max Planck Institute for the Science of Light Philip Russell/Max Planck Institute for the Science of Light

We investigate supercontinuum generation in a polarization-maintaining (PM) all-normal dispersion (ANDi) photonic crystal fiber and show that pumping along the fiber’s fast axis is stable while both the slow and off-axis exhibit cross-phase modulation instability

Authors:Etienne Genier/NKT Photonics Inc Amar Ghosh/FEMTO-ST Swetha bobba/FEMTO-ST Patrick Bowen/NKT Photonics Inc Ole Bang/DTU Fotonik Peter Moselund/NKT Photonics Inc John Dudley/FEMTO-ST Thibaut Sylvestre/FEMTO-ST

We report the first realization of an anti-parity-time symmetric optical potential supporting 2^nd-order exceptional point in standard optical fibers. Phase-transition, symmetry-breaking and coalescence of supermodes are observed when Brillouin optomechanical coupling exceeds the wavenumber-mismatch.

Authors:Arik Bergman/Photonics Initiative, Advanced Science Research Center, City University of New York, Robert Duggan/Photonics Initiative, Advanced Science Research Center, City University of New York, Kavita Sharma/Faculty of Engineering and Institute for Nano-Technology and Advanced Materials, Bar-Ilan University, Hilel Hagai Diamandi/Faculty of Engineering and Institute for Nano-Technology and Advanced Materials, Bar-Ilan University, Moshe Tur/School of Electrical Engineering, Tel-Aviv University, Avi Zadok/Faculty of Engineering and Institute for Nano-Technology and Advanced Materials, Bar-Ilan University, Andrea Alù/Photonics Initiative, Advanced Science Research Center, City University of New York,

We demonstrate, for the first time, that Raman scattering can be suppressed, by as much as ~17 dB, just by controlling the angular momentum content of fiber modes, of identical mode area.

Authors:Xiao Liu/Boston University Zelin Ma/Boston University Poul Kristensen/OFS-Fitel Siddharth Ramachandran/Boston University

A Raman comb extending down to 140 nm in the vacuum UV is generated in hydrogen-filled hollow-core photonic crystal fiber pumped simultaneously by visible and UV pulses obtained from a compact 1030 nm pump laser.

Authors:Rinat Tyumenev/Max Planck Institute for Light David Novoa/Max Planck Institute for Light Philip Russell/Max Planck Institute for Light

We demonstrate an efficient scheme (> 30%) for the generation of ultra-short circularly polarized pulses in the deep ultraviolet with high energy (> 20μJ) through seeded four-wave mixing in stretched gas-filled hollow capillary fibers.

Authors:Athanasios Lekosiotis/Heriot-Watt University Federico Belli/Heriot-Watt University Christian Brahms/Heriot-Watt University John Travers/Heriot-Watt University

We present compact planar devices that enable light's spin and orbital angular momenta to evolve, simultaneously, from one state to another along the propagation direction, and report on arbitrary spin-orbit coupling into three dimensional vortices.

Authors:Ahmed Dorrah/Harvard University Noah Rubin/Harvard University Aun Zaidi/Harvard University Michele Tamagnone/Harvard University Federico Capasso/Harvard University

We develop a unified perspective of unidirectional topological edge waves in non-reciprocal media. We focus on the inherent role of photonic spin in non-reciprocal gyroelectric media, ie. magnetized metals or magnetized insulators.

Authors:Todd Van Mechelen/Purdue University Zubin Jacob/Purdue University

With phase- and polarization-resolving near-field optical microscopy we directly visualize the electromagnetic vector field in topological photonic crystals featuring the optical quantum spin Hall effect. We reveal that the local optical spin of spin-protected edge states is highly structured.

Authors:Sonakshi Arora/Delft University of Technology Thomas Bauer/Delft University of Technology René Barczyk/AMOLF Ewold Verhagen/AMOLF Kobus Kuipers/Delft University of Technology

We report giant nonlinear circular dichroism for second- and third-harmonic generation from nonlinear chiral polaritonic metasurfaces. Experimentally, over 86% of circular dichroisms for the two harmonic generations on one-chip system around 10 μm were achieved.

Authors:Daeik Kim/UNIST Jaeyeon Yu/UNIST Frederic Demmerle/Technische Universitat Munchen Gerhard Boehm/Technische Universitat Munchen Mikhail Belkin/Technische Universitat Munchen Jongwon Lee/UNIST

We show that two-layer photonic crystal slabs with chiral perturbations yield Fano resonances with controllable amplitude and phase, and demonstrate devices with spatially tailored dark modes that anomalously reflect light with controllable diffraction efficiency.

Authors:Adam Overvig/City University of New York Stephanie Malek/Columbia University Nanfang Yu/Columbia University Andrea Alù/City University of New York

We report on the observation of photoluminescence-mediated spin-split dispersions in momentum space–photonic Rashba effect–from quantum dots or transition metal dichalcogenide monolayer, which are embedded into a photonic crystal with geometric phase defects.

Authors:Kexiu Rong/Technion Bo Wang/Technion Avi Reuven/Technion Elhanan Maguid/Technion Bar Cohn/Technion Vladimir Kleiner/Technion Erez Hasman/Technion

We investigate the ability of gradient metasurfaces to promote directional light emission from an ensemble of dipole sources (colloidal quantum dots) in their near field. Well-collimated output beams along geometrically tunable directions are measured.

Authors:Xiaowei Wang/Boston University Yuyu Li/Boston University Reyhaneh Toufanian/Boston University Leonard Kogos/Boston University Allison Dennis/Boston University Roberto Paiella/Boston University

We experimentally demonstrate the spin-orbit interaction of light in Indium Tin Oxide film when illuminated with circularly-polarized light of wavelength close to the epsilon-near-zero region where the real part of its permittivity vanishes.

Authors:Ravi Saripalli/Physical Research Laboratory N. Apurv Chaitanya/Tecnologico de Monterrey Anirban Ghosh/Physical Research Laboratory Varun Sharma/Physical Research Laboratory Israel de Leon/Tecnologico de Monterrey Goutam Samanta/Physical Research Laboratory

We report a new acoustic-spectral imaging approach based on localized phonons in optical fibers, based on microfluidic channel diffusion, that can measure with a spatial resolution of 10 μm and frame rate of 50 Hz.

Authors:Huojiao Sun/Jinan University Yizhi Liang/Jinan University Long Jin/Jinan University Bai-Ou Guan/Jinan University

We demonstrate a spectrometer that uses a smartphone to image the speckle pattern produced by a multimode optical fiber. A smartphone-based algorithm uses the measured pattern and a calibration library to determine the input spectrum

Authors:Henry Tan/University of Melbourne Jasper Cadusch/University of Melbourne Bingxi Li/University of Melbourne Kenneth Crozier/University of Melbourne

We review our recent work on multispectral ghost imaging where broadband spectral fluctuations can be efficiently used to perfrom single-pixel sensing and imaging.

Authors:Goëry Genty/Tampereen Yliopisto Caroline Amiot/Tampereen Yliopisto Piotr Ryczkowski/Tampereen Yliopisto Han Wu/Sichuan University Ariari Friberg/University of Eastern Finland John Dudley/University of Burgundy Franche-Comté

We present a deep-learning approach toward speckle reconstruction with corruption through a multimode fiber (MMF). Our experiments demonstrate a partly or randomly corrupted speckle can be reconstructed into its intact speckle over a 1km-100μm-step-index MMF.

Authors:Pengfei Fan/Queen Mary University of London Michael Ruddlesden/Queen Mary University of London Yufei Wang/Queen Mary University of London Lei Su/Queen Mary University of London

Full-color artifact-free cell image transport through an 80 cm disordered optical fiber is demonstrated for the first time using a learning-based wide-field configuration. Incoherent broadband light from a halogen lamp is used for illumination.

Authors:Xiaowen Hu/University of Central Florida Jian Zhao/University of Central Florida Shengli Fan/University of Central Florida Jose Enrique Antonio-Lopez/University of Central Florida Rodrigo Amezcua Correa/University of Central Florida Axel Schülzgen/University of Central Florida

Here I review the recent progress of endo-microscopes based on holographic control of
light transport through multimode fibres. I discuss the fundamental and technological bases
as well as recent applications of the new imaging tool.

Authors:Tomas Cizmar/Leibniz-Institut für Photonische Tech

We have performed polarization-dependent terahertz time-domain spectroscopy measurements on a highly aligned film of single-wall carbon nanotubes and found that the terahertz pulse reflected from the substrate-film interface totally disappears at a specific polarization angle. © 2020 The Authors

Authors:Andrey Baydin/Rice University Natsumi Komatsu/Rice University Saunab Ghosh/Rice University Takuma Makihara/Rice University Gary Noe/Rice University Junichiro Kono/Rice University

We compare near-field tip-based Terahertz Time-Domain Spectroscopy and Laser Terahertz Emission Microscopy. We quantitatively determine each technique’s spatial field confinement and adapt the finite dipole model for applicability to both techniques.

Authors:Angela Pizzuto/Brown University Daniel Mittleman/Brown University Pernille Klarskov Pedersen/Aarhus University

We utilise optical-pump/terahertz-probe, terahertz emission spectroscopy and near-field terahertz microscopy to explore the optoelectronic properties of novel low-dimensional materials, including Dirac semi-metal nanowires, at the following extremes: temperatures <10K, sub-picosecond timescales and nanometre (<30nm) length scales.

Authors:Jessica Boland/University of Manchester

We demonstrate a new type of nonlinear THz Ghost-Imaging technique combining nonlinear pattern generation and time-resolved single-pixel measurements. Our approach allows reconstructing the morphology and spectral features of complex samples with subwavelength resolution.

Authors:Juan Sebastian Totero Gongora/EPic Laboratory, University of Sussex Luana Olivieri/EPic Laboratory, University of Sussex Luke Peters/EPic Laboratory, University of Sussex Vittorio Cecconi/EPic Laboratory, University of Sussex Antonio Cutrona/EPic Laboratory, University of Sussex Jacob Tunesi/EPic Laboratory, University of Sussex Robyn Tucker/EPic Laboratory, University of Sussex Alessia Pasquazi/EPic Laboratory, University of Sussex Marco Peccianti/EPic Laboratory, University of Sussex

Terahertz imaging often involves seeing through inhomogeneous and highly scattering media. We propose a wavelet multiresolution analysis approach to mitigate the scattering effects and produce highly-resolved reflection spectral images for chemical mapping through turbid media.

Authors:Mahmoud Khani/Stony Brook University Zachery Harris/Stony Brook University Hassan Arbab/Stony Brook University

We study THz light emitted from nonlinear metasurfaces, excited by low energy femtosecond lasers. Conversion efficiencies comparable to 2500-fold thicker nonlinear crystals allow measurement of α-lactose absorption lines, showing suitability for time domain spectroscopy.

Authors:Mai Tal/Tel Aviv University Shay Keren-Zur/Tel Aviv University Tal Ellenbogen/Tel Aviv University

A custom energy-efficient silicon impulse radiator is used as a source for THz spectroscopy of carbon monoxide (CO). Multiple absorption lines are measured across varying pressures and mixing ratios using a single broadband integrated source.

Authors:Yash Sanjay Mehta/UCLA Sam Razavian/UCLA Kevin Schwarm/UCLA R. M. Spearrin/UCLA Aydin Babakhani/UCLA

We propose a raster scanning adaptive optics method that uses digital image segmentation and a low-resolution deformable mirror with a maximum of 50 wavefront masks, which removes spatially varying aberrations (both sample and lens) across a field of view of 0.8 mm at 500 ms.

Authors:Yongxiao Li/Auatralian National University Yean Lim/Auatralian National University Woei Ming Lee/Auatralian National University Qiongkai Xu/Auatralian National University Lynette Beattie/University of Melbourne Elizabeth Gardiner/Auatralian National University Katharina Gaus/University of New South Wales William Heath/University of Melbourne

We present a new microscopy concept, where the process of retrieving computational specificity is part of the acquisition software, performed in real-time. We demonstrate it with various fluorescence tags and operation on live cells as well as tissue pathology.

Authors:Gabriel Popescu/Univ of Illinois at Urbana-Champaign

Treating structured illumination microscopy (SIM) as a Fourier domain tessellation challenge, we suggest a super-resolution method allowing spatial resolution better than l/4 and requiring up to three times less raw images, effectively increasing temporal resolution

Authors:Doron Shterman/Technion - Israel Institute of Technology Ori Eyal/Technion - Israel Institute of Technology Shai Tsesses/Technion - Israel Institute of Technology Guy Bartal/Technion - Israel Institute of Technology

Label-free photothermal microscopy with super-resolution was developed to investigate mouse brains, skin sections and unstained mouse muscle fibers. Continuous structural changing process of muscle fibers and mitochondria during and after muscle training was clearly resolved.

Authors:Takayoshi Kobayashi/University of Electro-Communications Kazuaki Nakata/University of Electro-Communications Hiroki Tanaka/University of Electro-Communications Yutaka Kano/University of Electro-Communications

We present a 3D reconstruction algorithm for the dual Airy beam scanning in volumetric two-photon microscopy. Lateral and axial positions of objects within the axial length of Airy beam can be accurately reconstructed.

Authors:KA YAN CHAN/The University of Hong Kong HONGSEN HE/The University of Hong Kong YU-XUAN REN/The University of Hong Kong Cora S. W. Lai/The University of Hong Kong Kenneth Wong/The University of Hong Kong

We demonstrate two-photon microscopy based on hollow Gaussian beam illumination by leveraging an axially elongated central lobe, along with reduced central lobe width for increased mode order of the focused hollow Gaussian beam.

Authors:SABIR UL ALAM/THE UNIVERSITY OF HONG KONG NIRAJ KUMAR SONI/THE UNIVERSITY OF HONG KONG YU-XUAN REN/THE UNIVERSITY OF HONG KONG HONGSEN HE/THE UNIVERSITY OF HONG KONG KEVIN K TSIA/THE UNIVERSITY OF HONG KONG Kenneth Wong/THE UNIVERSITY OF HONG KONG

Multiphoton neural imaging of Drosophila melanogaster required the removal of dorsal head capsule cuticle, prohibiting longitudinal imaging studies (> 5hrs). Here we demonstrate two- and three-photon imaging on cuticle-intact Drosophila brains with dorsal air-sacs removed.

Authors:Aaron Mok/Cornell University Jamien Shea/CORNELL UNIVERSITY Nilay Yapici/CORNELL UNIVERSITY Chris Xu/Cornell University

We characterized phase noise and instability of submarine optical fibers in view of trans-oceanic atomic clock comparisons. The low background acoustic noise recorded on submarine fibers allows under-water earthquakes detection over trans-oceanic distances.

Authors:Cecilia Clivati/INRIM Giuseppe Marra/National Physical Laboratory Filippo Levi/INRIM Alberto Mura/INRIM Andrè Xuereb/Department of Physics, University of Malta Davide Calonico/INRIM

We demonstrate an architecture for massively parallel frequency-modulated continuous wave (FMCW) laser ranging (LiDAR) by transferring linear chirps of a single narrow linewidth laser onto all soliton comb teeth though generation of a dissipative Kerr soliton in an integrated Si₃N₄ microresonator.

Authors:Johann Riemensberger/Swiss Federal Institute of Technology in Lausanne (EPFL) Anton Lukashchuk/Swiss Federal Institute of Technology in Lausanne (EPFL) Maxim Karpov/Swiss Federal Institute of Technology in Lausanne (EPFL) Erwan Lucas/Swiss Federal Institute of Technology in Lausanne (EPFL) Wenle Weng/Swiss Federal Institute of Technology in Lausanne (EPFL) Junqiu Liu/Swiss Federal Institute of Technology in Lausanne (EPFL) Tobias Kippenberg/Swiss Federal Institute of Technology in Lausanne (EPFL)

We propose and demonstrate frequency-modulated comb LIDAR (FMcomb LIDAR), in which comb modes of a frequency-modulated optical frequency comb are coherently stitched, generating an effective larger scanning range and enhanced ranging resolution.

Authors:Naoya Kuse/IMRA America, Boulder Research Labs Martin Fermann/IMRA America

We realize a coherent fiber link between the National Metrology Institute and two radio telescopes in Italy. It allows referencing of Very Long Baseline Interferometry (VLBI) facilities with primary frequency standards and common-clock campaigns, which we are now using to assess VLBI performances.

Authors:Cecilia Clivati/INRIM Roberto Aiello/Istituto Nazionale di Ottica INO-CNR Giuseppe Bianco/Agenzia Spaziale Italiana Claudio Bortolotti/Istituto di Radioastronomia IRA-INAF Valentina Di Sarno/Istituto Nazionale di Ottica INO-CNR Pasquale Maddaloni/Istituto Nazionale di Ottica INO-CNR Filippo Levi/INRIM Giuseppe Maccaferri/Istituto di Radioastronomia IRA-INAF Alberto Mura/INRIM Monia Negusini/Istituto di Radioastronomia IRA-INAF Federico Perini/Istituto di Radioastronomia IRA-INAF Mauro Roma/Istituto di Radioastronomia IRA-INAF Roberto Ricci/Istituto di Radioastronomia IRA-INAF Luigi Santamaria Amato/Agenzia Spaziale Italiana Mario Siciliani De Cumis/Agenzia Spaziale Italiana Matteo Stagni/Istituto di Radioastronomia IRA-INAF Davide Calonico/INRIM

We present the technical design of the pulsed-optical timing distribution system for LCLS-II and characterize its performance with out-of-loop measurements indicating a long-term timing stability of one femtosecond.

Authors:Kemal Shafak/Cycle GmbH Stefan Droste/SLAC National Accelerator Laboratory Haynes Pak Hay Cheng/Cycle GmbH Anan Dai/Cycle GmbH Karl Gumerlock/SLAC National Accelerator Laboratory Andrej Berlin/Cycle GmbH Shashank Bhat/Cycle GmbH Mathias Neuhaus/Cycle GmbH Julia Paradowski/Cycle GmbH Frank Okrent/Cycle GmbH Philipp Schiepel/Cycle GmbH Alan Fry/SLAC National Accelerator Laboratory Franz KÄRTNER/Deutsches Elektronen-Synchrotron

We present a dynamic angle measurement method based on dual-comb interferometry that can reach a precision of 0.08 arc-second with 1 kHz response speed. This method can also be applied at long stand-off distances.

Authors:Siyu Zhou/Tsinghua University Vunam Le/Tsinghua University Kai Ni/Division of Advanced Manufacturing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China Qian Zhou/Division of Advanced Manufacturing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China Guanhao Wu/Tsinghua University

Using two-photon lithography, we fabricate an ultra-compact atomic force microscope engine on the facet of a multi-core fiber. The AFM is optically actuated and read out, and it offers atomic step-height resolution in difficult-to-access areas.

Authors:Mareike Trappen/KIT, IPQ Philipp-Immanuel Dietrich/KIT, IPQ Pascal Burger/KIT Matthias Blaicher/KIT, IPQ Gerald Göring/KIT Thomas Schimmel/KIT Wolfgang Freude/KIT, IPQ Hendrik Hölscher/KIT Christian Koos/KIT, IPQ

The recent progress on synthetic space topological photonics will be described, from the basic concepts and first experiments to new ideas on high-dimensional physics and mode-locking of topological insulator lasers.

Authors:Mordechai Segev/Technion Israel Institute of Technology Eran Lustig/Technion Israel Institute of Technology Steffen Weimann/University of Rostock Yonatan Plotnik/Technion Israel Institute of Technology yaakov lumer/Technion Israel Institute of Technology Miguel Bandres/CREOL, University of Central Florida Zhaoju Yang/Technion Israel Institute of Technology Alexander Szameit/University of Rostock

We report our experimental results on topologically protected path-entangled photonic states using dimer chains in silicon photonics. These results highlight the potential of the lattice topology to protect photonic quantum information.

Authors:Andrea Blanco-Redondo/Nokia Bell Labs

We demonstrate and visualize the emergence of a topological transition and opening of a Dirac cone by directly exciting the bulk modes of the higher-order topological metasurface via solid-state immersion spectroscopy. The open nature of the metasurface is then utilized to directly image topological boundary states. We show that, while the topological domain walls host 1D edge states, their bending induces 0D higher-order topological modes confined to the corners.

Authors:Alexander Khanikaev/City College of New York

Chern-Simons theories have been incredibly successful explaining integer and fractional quantum Hall phases, as well as topological insulators. Here, we develop viscous Maxwell-Chern-Simons theory to capture the fundamental physics of topological electromagnetic phases.

Authors:Todd Van Mechelen/Purdue University Zubin Jacob/Purdue University

A general relation between the resonant dipole-dipole interaction range and properties of the isosurface is described. This work lays the foundation to use Weyl photonic crystals as a platform to extend the interaction range

Authors:Lei Ying/University of Wisconsin-Madison Ming Zhou/University of Wisconsin-Madison Michael Mattei/University of Wisconsin-Madison Boyuan Liu/University of Wisconsin-Madison Paul Campagnola/University of Wisconsin-Madison Randall Goldsmith/University of Wisconsin-Madison Zongfu Yu/University of Wisconsin-Madison

Metasurfaces are a powerful tool to design arbitrary vector beams. I will discuss recent work on spin to total orbital angular momentum converters, multi-momentum metatransformers, high purity OAM lasing and transverse/longitudinal structured light generation

Authors:Federico Capasso/Harvard University

I will describe the use of propagation invariant light fields for light sheet microscopy. In addition I will show the use of temporal focusing with single pixel detection for imaging at depth.

Authors:Kishan Dholakia/University of St Andrews

The generation of structured light by means of metasurfaces is presented and the applications in the characterizations of polarization rotation and Pancharatnam-Berry phase are discussed.

Authors:Fuyong Yue/INRS-Energie Mat & Tele Site Varennes Vincenzo Aglieri/INRS-Energie Mat & Tele Site Varennes Riccardo Piccoli/INRS-Energie Mat & Tele Site Varennes Aadhi Rahim/INRS-Energie Mat & Tele Site Varennes Roberto Macaluso/Università degli Studi di Palermo Andrea Toma/Istituto Italiano di Tecnologia, Via Morego Luca Razzari/INRS-Energie Mat & Tele Site Varennes Roberto Morandotti/INRS-Energie Mat & Tele Site Varennes

We provide an overview of recent activities in the general area of Airy beams and accelerating waves. The fundamentals behind this class of wavefronts will be discussed with special emphasis on applications.

Authors:Demetrios Christodoulides/University of Central Florida

We can make a universal quantum computing based on quantum teleportation. For that purpose, we need non-Gaussian ancillary inputs, measurements, and nonlinear feedforward. I will explain this methodology.

Authors:Akira Furusawa/University of Tokyo

Non-Abelian geometric phases are at the heart of holonomic quantum computing. Here we show their implementation in photonic waveguides, their characterization by the Wilson loop, and their optimization based on the quantum metric.

Authors:Stefan Scheel/Universität Rostock Mark Kremer/Universität Rostock Lucas Teuber/Universität Rostock Julien Pinske/Universität Rostock Alexander Szameit/Universität Rostock

Photonic quantum computers are now accessible on the cloud. In this presentation we discuss the hardware and software development enabling this, and the application areas and problems addressable with such present-day and near-term systems.

Authors:Zachary Vernon/Xanadu Quantum Technologies Inc

We experimentally demonstrate the integration of 128 waveguide-coupled diamond spin qubits with aluminum nitride photonics. This large-scale, tunable, efficient and optically coherent multi-qubit platform sets the stage for high-rate entanglement distribution in a large quantum network.

Authors:Noel Wan/Massachusetts Institute of Technology Tsung-Ju Lu/Massachusetts Institute of Technology Kevin Chen/Massachusetts Institute of Technology Michael Walsh/Massachusetts Institute of Technology Matthew Trusheim/Massachusetts Institute of Technology Lorenzo De Santis/Massachusetts Institute of Technology Eric Bersin/Massachusetts Institute of Technology Isaac Harris/Massachusetts Institute of Technology Sara Mouradian/Massachusetts Institute of Technology Ian Christen/Massachusetts Institute of Technology Edward Bielejec/Sandia National Laboratories Dirk Englund/Massachusetts Institute of Technology

We demonstrate continuous photonic quantum walks with tunable depth in the frequency domain with high-dimensional entangled photon pairs. We generate a biphoton energy bound state through coherent control of the phase on the initial state.

Authors:Poolad Imany/Purdue University Navin Lingaraju/Purdue University Mohammed Alshaykh/Purdue University Daniel Leaird/Purdue University Andrew Weiner/Purdue University

We use multi-modal ptychography to obtain harmonic-resolved beam profiles and wavefronts without grating dispersion. These beams can be back-propagated to the source to characterize the generation process.

Authors:David Schmidt/Colorado School of Mines Logan Ramlet/Colorado School of Mines Alex Wilhelm/Colorado School of Mines Carlos Hernández-García/Department of Applied Physics, Universidad de Salamanca Daniel Adams/Colorado School of Mines Charles Durfee/Colorado School of Mines

The coherent artifact hinders accurate inversion of FROG spectrograms. Here we demonstrate a technique to accurately retrieve not only the average pulse shape but also the artifact itself, providing access to the underlying coherence properties.

Authors:Esmerando Escoto/Max Born Institute Rana Jafari/Georgiatech Rick Trebino/Georgiatech Gunter Steinmeyer/Max Born Institute

In this work we present a common pulse retrieval algorithm (COPRA) that can be universally applied to many pulse measurement methods and compares favorably in terms of speed and accuracy to existing approaches.

Authors:Nils Geib/Friedrich Schiller University Jena Heiko Knopf/Friedrich Schiller University Jena Gia Quyet Ngo/Friedrich Schiller University Jena Thomas Pertsch/Friedrich Schiller University Jena Falk Eilenberger/Friedrich Schiller University Jena

We propose a simple all-in-line single-shot scheme for diagnostics of ultrashort laser pulses, consisting of a multi-mode fiber and a χ⁽²⁾ nonlinear crystal. Complete pulse characterization is done from the measurements using Deep Learning methods.

Authors:Ron Ziv/Technion - Israel Institute of Technology Alex Dikopoltsev/Technion - Israel Institute of Technology Tom Zahavy/Technion - Israel Institute of Technology Ittai Rubinstein/Technion - Israel Institute of Technology Pavel Sidorenko/Technion - Israel Institute of Technology Oren Cohen/Technion - Israel Institute of Technology Mordechai Segev/Technion - Israel Institute of Technology

We show that the recently introduced RANA FROG pulse-retrieval approach provides an exceptionally reliable indication of pulse-shape stability vs. instability in trains of pulses.

Authors:Rana Jafari/Georgia Institute of Technology Rick Trebino/Georgia Institute of Technology

We demonstrate a novel dispersion scan algorithm using grating dispersion. We also propose using the intrinsic dispersion of temporally focused laser pulses to characterize the pulse structure by scanning a nonlinear crystal through focus.

Authors:Alex Wilhelm/Colorado School of Mines David Schmidt/Colorado School of Mines Daniel Adams/Colorado School of Mines Charles Durfee/Colorado School of Mines

We use a genetic algorithm (GA) to retrieve a pump-induced phase modulation on a probe pulse in Single-Shot Supercontinuum Spectral Interferometry (SSSI) without pre-characterizing the probe pulse to determine its spectral phase.

Authors:Dhruvit Patel/University of Maryland at College Park Dogeun Jang/University of Maryland at College Park Scott Hancock/University of Maryland at College Park Howard Milchberg/University of Maryland at College Park Ki-Yong Kim/University of Maryland at College Park

An ultrafast optical vector network analyzer (OVNA) based on dispersive time-stretch and digital coherent detection is proposed and experimentally demonstrated, and it successfully characterizes a micro-ring cavity with 20-MHz frame rate and over 12-nm bandwidth.

Authors:Lun Li/Wuhan National Lab for Optoelectronics Liang Xu/Wuhan National Lab for Optoelectronics Lei Zhang/Wuhan National Lab for Optoelectronics Yuhua Duan/Wuhan National Lab for Optoelectronics Yaoshuai Li/Wuhan National Lab for Optoelectronics Ningning Yang/Wuhan National Lab for Optoelectronics Chi Zhang/Wuhan National Lab for Optoelectronics Xinliang Zhang/Wuhan National Lab for Optoelectronics

I will present both deterministic scanning antenna and stochastic localisation mapping of the nanoscale antenna-molecule interaction, towards stronger coupling, bright single photon sources, rate enhancement and spectral control.

Authors:Niek van Hulst/ICFO -Institut de Ciencies Fotoniques

Optical detection of electrogenic activity has been the goal of neuroscientists for decades. We introduce an electro-active plasmonic field probe enabling label-free and ultrasensitive detection of electrophysiological signals with unprecedent spatiotemporal resolution capability.

Authors:Ahsan Habib/University of California Xiangchao Zhu/University of California Uryan Can/University of Notre Dame Maverick McLanahan/University of California Pinar Zorlutuna/University of Notre Dame Ahmet Yanik/University of California

By 2D Raman mapping, we observe a spatially correlated linear dependence between molecular Raman scattering (MRS) and electronic Raman scattering (ERS) signals, revealing the same nanoplasmonic |E|⁴ enhancement factors for both MRS and ERS processes.

Authors:Wonil Nam/Virginia Tech Yuming Zhao/Virginia Tech Wei Zhou/Virginia Tech

We introduce femtosecond atomic forces as a new stimulus to choreograph ultrafast molecular motion. Applying sub-cycle forces to key atoms of a molecular switch allows us to coherently steer a frustrated structural rotation that modulates the molecule’s transient reaction statistics by up to 39%.

Authors:Dominik Peller/University of Regensburg Lukas Z. Kastner/University of Regensburg Thomas Buchner/University of Regensburg Carmen Roelcke/University of Regensburg Florian Albrecht/University of Regensburg Nikolaj Moll/IBM Research-Zurich Jascha Repp/University of Regensburg Rupert Huber/University of Regensburg

We combine a novel Fourier demodulation analysis with numerical simulations of near-field microscopy. Thereby, we quantify the experimentally inaccessible, nanoscale electric field distributions from which we infer the fundamental limits of the spatial resolution.

Authors:Markus Huber/University of Regensburg Fabian Mooshammer/University of Regensburg Fabian Sandner/University of Regensburg Markus Plankl/University of Regensburg Martin Zizlsperger/University of Regensburg Rupert Huber/University of Regensburg

Measuring near-field waveforms on atomic length scales has remained an open challenge. Using a molecular switch as a local field sensor, we directly sample the temporal shape and strength of atomically confined light field transients.

Authors:Carmen Roelcke/University of Regensburg Dominik Peller/University of Regensburg Alexander Neef/University of Regensburg Lukas Z. Kastner/University of Regensburg Thomas Buchner/University of Regensburg Johannes Hayes/University of Regensburg Dominik Sidler/Max Planck Institute for the Structure and Dynamics of Matter Franco Bonafe/Max Planck Institute for the Structure and Dynamics of Matter Michael Ruggenthaler/Max Planck Institute for the Structure and Dynamics of Matter Angel Rubio/Max Planck Institute for the Structure and Dynamics of Matter Jascha Repp/University of Regensburg Rupert Huber/University of Regensburg

We introduce the mesoscopic electromagnetic boundary conditions and establish an experimental procedure to measure the dispersive surface response functions, enabled by observations of pronounced nonclassical effects—spectral shifts >30% and the
breakdown of Kreibig-like broadening.

Authors:Yi Yang/Massachusetts Institute of Technology Di Zhu/Massachusetts Institute of Technology Wei Yan/CNRS Akshay Agrawal/Massachusetts Institute of Technology Mengjie Zheng/Massachusetts Institute of Technology John Joannopoulos/Massachusetts Institute of Technology Philippe Lalanne/CNRS Thomas Christensen/Massachusetts Institute of Technology Karl Berggren/Massachusetts Institute of Technology Marin Soljacic/Massachusetts Institute of Technology

We predict upper bounds to light–matter interactions at a given frequency in passive nanophotonic systems. Such bounds set the ultimate limits to the control of light for architectures from nanoparticles to metasurfaces.

Authors:Zeyu Kuang/Yale Univeristy Owen Miller/Yale Univeristy

By allowing phase in the image plane to be a free parameter, we experimentally demonstrate that it is possible to correct chromatic aberrations over an almost unlimited bandwidth with a single diffractive flat lens.

Authors:Sourangsu Banerji/University of Utah Monjurul Meem/University of Utah Apratim Majumder/University of Utah Berardi Rodriguez/University of Utah Rajesh Menon/University of Utah

We propose a novel approach to EPs and report their first observation in plasmonics at room temperature. Enhanced sensing of anti-Immunoglobulin G (attomolar detection), the most common antibody found in blood circulation, is reported

Authors:Abdoulaye Ndao/University California Berkeley Junhee Park/University California Berkeley Liyi Hsu/University California Berkeley Boubacar Kante/University California Berkeley

We investigate the exceptional points in a two-layer cylindrical waveguide structure consisting of absorbing and non-absorbing dielectrics. We show that the sensitivity of the effective index of the waveguide mode is enhanced at exceptional points.

Authors:Yin Huang/Central South University Yuecheng Shen/Sun Yat-Sen University Georgios Veronis/Louisiana State University

We derive general bounds to optical superresolution, i.e., maximum intensity for electromagnetic waves from arbitrary wavefront-shaping devices that break the diffraction "limit." We use inverse design to discover metasurfaces operating close to our bounds.

Authors:Hyungki Shim/Yale University Haejun Chung/Yale University Owen Miller/Yale University

Scaling laws of mode confinement and lasing threshold in plasmonic nanolasers far beyond the diffraction limit are proposed, by which we revisit the reported realizations and discuss the future prospects in further plasmonic nanolaser miniaturization.

Authors:Hao Wu/Zhejiang University Xin Guo/Zhejiang University Pan Wang/Zhejiang University Daoxin Dai/Zhejiang University Limin Tong/Zhejiang University

We propose and experimentally demonstrate a 2-bit wavelength-division-multiplexing (WDM) based optical comparator using microdisk modulators operating at 10 Gb/s. The proposed comparator has advantages of higher speed and lower power consumption compared to electronic counterparts.

Authors:Chenghao Feng/University of Texas at Austin Zhoufeng Ying/University of Texas at Austin Zheng Zhao/University of Texas at Austin Jiaqi Gu/University of Texas at Austin David Pan/University of Texas at Austin Ray Chen/University of Texas at Austin

We demonstrate on-chip quantum-correlated photons and rejection of pump photons by ~112 dB using filters on two silicon-on-insulator photonic integrated circuits. The photon pairs had coincidence-to-accidental ratio (CAR) of 155 at 0.2 mW pump power.

Authors:Rakesh Ranjan Kumar/The Chinese University of Hong Kong Xinru Wu/The Chinese University of Hong Kong Yaojing Zhang/The Chinese University of Hong Kong Hon Ki Tsang/The Chinese University of Hong Kong

Color centers in diamond and silicon carbide in combination with novel fabrication techniques and photonics inverse design approach offer a scalable platform for implementation of quantum technologies.

Authors:Jelena Vuckovic/Stanford University

We present a novel platform for integrated quantum photonics based on tantalum pentoxide thin films. We show passive and active functionality with 356,000 Q-factor ring resonators, nanoelectromechanical phase shifters and 84% efficiency waveguide-integrated single-photon detectors.

Authors:Martin Wolff/University of Münster Lukas Splitthoff/University of Münster Thomas Grottke/University of Münster Simon Vogel/University of Münster Carsten Schuck/University of Münster

An integrated silicon photonic chip is proposed and demonstrated for executing complex-valued neural network. Complex arithmetic is executed by encoding and manipulating information in both magnitude and phase. High accuracy and strong learning capability are achieved.

Authors:Hui Zhang/Nanyang Technological University Mile Gu/Nanyang Technological University Xudong Jiang/Nanyang Technological University Jayne Thompson/National University of Singapore Hong Cai/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Stefano Paesani/University of Bristol Raffaele Santagati/University of Bristol Anthony Laing/University of Bristol Yi Zhang/Nanyang Technological University Faeyz Karim Muhammad/Nanyang Technological University Patrick Guo-Qiang Lo/Advanced Micro Foundry Dim-Lee Kwong/Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research) Leong Chuan Kwek/National University of Singapore Ai Qun Liu/Nanyang Technological University

We demonstrate hybrid integration of gallium phosphide photonic crystal cavities with superconducting Nb circuits using direct wafer bonding. Quality factors of Q_o = 1.4*10⁵ are achieved for optical cavities in close proximity to the Nb electrodes.

Authors:Simon Hönl/IBM Research -- Zurich Youri Popoff/IBM Research -- Zurich Diana Davila Pineda/IBM Research -- Zurich Daniele Caimi/IBM Research -- Zurich Paul Seidler/IBM Research -- Zurich

We integrate atoms and nano-waveguides on a chip to demonstrate a chip-scale frequency reference. Novel design and fabrication allows to face challenges related to linewidth, light-shift and frequency instability

Authors:Roy Zektzer/The hebrew university of Jerusalem Noa Mazurski/The hebrew university of Jerusalem yefim barash/The hebrew university of Jerusalem Uriel Levy/The hebrew university of Jerusalem

With judicious design of a multi-level diffractive lens (MDL), it is possible to drastically enhance the depth of focus by over ~4 orders of magnitude while maintaining focus for objects that are separated by ∼6m.

Authors:Sourangsu Banerji/University of Utah Monjurul Meem/University of Utah Apratim Majumder/University of Utah Berardi Rodriguez/University of Utah Rajesh Menon/University of Utah

We demonstrate a spatially multiplexed metasurface for generating paired propagation-invariant and rotating beams with complementary depth responses, enabling three-dimensional computational imaging of scenes with a single camera snapshot in a compact form factor.

Authors:Shane Colburn/University of Washington Arka Majumdar/University of Washington

We show that the optical vortex illumination of objects undergoing diffraction performs simultaneous corner detection and image compression to be exploited in machine learning applications immune to adversarial attacks and robust to background noise.

Authors:Luat Vuong/University of California at Riverside Baurzhan Muminov/University of California at Riverside